在编写代码的时候有个神奇的工具总是好的！下面这里收集了 40+ PHP 代码片段，可以帮助你开发 PHP 项目。
这些 PHP 片段对于 PHP 初学者也非常有帮助，非常容易学习，让我们开始学习吧～
1. 发送 SMS
在开发 Web 或者移动应用的时候，经常会遇到需要发送 SMS 给用户，或者因为登录原因，或者是为了发送信息。下面的 PHP 代码就实现了发送 SMS 的功能。
为了使用任何的语言发送 SMS，需要一个 SMS gateway。大部分的 SMS 会提供一个 API，这里是使用 MSG91作为 SMS gateway。
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function send_sms($mobile,$msg)
{$authKey = "XXXXXXXXXXX";
date_default_timezone_set("Asia/Kolkata");
$date = strftime("%Y-%m-%d %H:%M:%S");
//Multiple mobiles numbers separated by comma$mobileNumber = $mobile;
//Sender ID,While using route4 sender id should be 6 characters long.$senderId = "IKOONK";
//Your message to send, Add URL encoding here.$message = urlencode($msg);
//Define route $route = "template";
//Prepare you post parameters$postData = array(
\'authkey\' => $authKey,
\'mobiles\' => $mobileNumber,
\'message\' => $message,
\'sender\' => $senderId,
\'route\' => $route
); //API URL$url="https://control.msg91.com/sendhttp.php";
// init the resource$ch = curl_init();
curl_setopt_array($ch, array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $postData
//,CURLOPT_FOLLOWLOCATION => true
)); //Ignore SSL certificate verificationcurl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
//get response$output = curl_exec($ch);
//Print error if anyif(curl_errno($ch))
{ echo \'error:\' . curl_error($ch);
} curl_close($ch);
} |
其中“$authKey = "XXXXXXXXXXX";”需要你输入你的密码，“$senderId = "IKOONK";”需要你输入你的 SenderID。当输入移动号码的时候需要指定国家代码 (比如，美国是 1，印度是 91 )。
语法：
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<?php$message = "Hello World";
$mobile = "918112998787";
send_sms($mobile,$message);
?> |
2. 使用 mandrill 发送邮件
Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。
下面的函数中，你需要把 “Mandrill.php” 放在同一个文件夹，作为 PHP 文件，这样就可以使用TA来发送邮件。
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function send_email($to_email,$subject,$message1)
{require_once \'Mandrill.php\';
$apikey = \'XXXXXXXXXX\'; //specify your api key here
$mandrill = new Mandrill($apikey);
$message = new stdClass();
$message->html = $message1;
$message->text = $message1;
$message->subject = $subject;
$message->from_email = "blog@koonk.com";//Sender Email
$message->from_name = "KOONK";//Sender Name
$message->to = array(array("email" => $to_email));
$message->track_opens = true;
$response = $mandrill->messages->send($message);
} |
“$apikey = \'XXXXXXXXXX\'; //specify your api key here”这里需要你指定你的 API 密钥（从 Mandrill 账户中获得）。
语法：
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<?php$to = "abc@example.com";
$subject = "This is a test email";
$message = "Hello World!";
send_email($to,$subject,$message);
?> |
为了达到最好的效果，最好按照 Mandrill 的教程去配置 DNS。
3. PHP 函数：阻止 SQL 注入
SQL 注入或者 SQLi 常见的攻击网站的手段，使用下面的代码可以帮助你防止这些工具。
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function clean($input)
{ if (is_array($input))
{
foreach ($input as $key => $val)
{
$output[$key] = clean($val);
// $output[$key] = $this->clean($val);
}
}
else
{
$output = (string) $input;
// if magic quotes is on then use strip slashes
if (get_magic_quotes_gpc())
{
$output = stripslashes($output);
}
// $output = strip_tags($output);
$output = htmlentities($output, ENT_QUOTES, \'UTF-8\');
}
// return the clean text return $output;
} |
语法：
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<?php$text = "<script>alert(1)</script>";
$text = clean($text);
echo $text;
?> |
4. 检测用户位置
使用下面的函数，可以检测用户是在哪个城市访问你的网站
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function detect_city($ip) {
$default = \'UNKNOWN\';
$curlopt_useragent = \'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)\';
$url = \'http://ipinfodb.com/ip_locator.php?ip=\' . urlencode($ip);
$ch = curl_init();
$curl_opt = array(
CURLOPT_FOLLOWLOCATION => 1,
CURLOPT_HEADER => 0,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_USERAGENT => $curlopt_useragent,
CURLOPT_URL => $url,
CURLOPT_TIMEOUT => 1,
CURLOPT_REFERER => \'http://\' . $_SERVER[\'HTTP_HOST\'],
);
curl_setopt_array($ch, $curl_opt);
$content = curl_exec($ch);
if (!is_null($curl_info)) {
$curl_info = curl_getinfo($ch);
}
curl_close($ch);
if ( preg_match(\'{<li>City : ([^<]*)</li>}i\', $content, $regs) ) {
$city = $regs[1];
}
if ( preg_match(\'{<li>State/Province : ([^<]*)</li>}i\', $content, $regs) ) {
$state = $regs[1];
}
if( $city!=\'\' && $state!=\'\' ){
$location = $city . \', \' . $state;
return $location;
}else{
return $default;
}
}
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语法：
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<?php$ip = $_SERVER[\'REMOTE_ADDR\'];
$city = detect_city($ip);
echo $city;
?> |
5. 获取 Web 页面的源代码
使用下面的函数，可以获取任意 Web 页面的 HTML 代码
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function display_sourcecode($url)
{$lines = file($url);
$output = "";
foreach ($lines as $line_num => $line) {
// loop thru each line and prepend line numbers
$output.= "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\n";
}} |
语法：
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<?php$url = "http://blog.koonk.com";
$source = display_sourcecode($url);
echo $source;
?> |
6. 计算喜欢你的 Facebook 页面的用户
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function fb_fan_count($facebook_name)
{ $data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));
$likes = $data->likes;
return $likes;
} |
语法：
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<?php$page = "koonktechnologies";
$count = fb_fan_count($page);
echo $count;
?> |
7. 确定任意图片的主导颜色
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function dominant_color($image)
{$i = imagecreatefromjpeg($image);
for ($x=0;$x<imagesx($i);$x++) {
for ($y=0;$y<imagesy($i);$y++) {
$rgb = imagecolorat($i,$x,$y);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> & 0xFF;
$b = $rgb & 0xFF;
$rTotal += $r;
$gTotal += $g;
$bTotal += $b;
$total++;
}
}$rAverage = round($rTotal/$total);
$gAverage = round($gTotal/$total);
$bAverage = round($bTotal/$total);
} |
8. whois 查询
使用下面的函数可以获取任何域名用户的完整细节
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function whois_query($domain) {
// fix the domain name:
$domain = strtolower(trim($domain));
$domain = preg_replace(\'/^http:\/\//i\', \'\', $domain);
$domain = preg_replace(\'/^www\./i\', \'\', $domain);
$domain = explode(\'/\', $domain);
$domain = trim($domain[0]);
// split the TLD from domain name
$_domain = explode(\'.\', $domain);
$lst = count($_domain)-1;
$ext = $_domain[$lst];
// You find resources and lists
// like these on wikipedia:
//
// http://de.wikipedia.org/wiki/Whois
//
$servers = array(
"biz" => "whois.neulevel.biz",
"com" => "whois.internic.net",
"us" => "whois.nic.us",
"coop" => "whois.nic.coop",
"info" => "whois.nic.info",
"name" => "whois.nic.name",
"net" => "whois.internic.net",
"gov" => "whois.nic.gov",
"edu" => "whois.internic.net",
"mil" => "rs.internic.net",
"int" => "whois.iana.org",
"ac" => "whois.nic.ac",
"ae" => "whois.uaenic.ae",
"at" => "whois.ripe.net",
"au" => "whois.aunic.net",
"be" => "whois.dns.be",
"bg" => "whois.ripe.net",
"br" => "whois.registro.br",
"bz" => "whois.belizenic.bz",
"ca" => "whois.cira.ca",
"cc" => "whois.nic.cc",
"ch" => "whois.nic.ch",
"cl" => "whois.nic.cl",
"cn" => "whois.cnnic.net.cn",
"cz" => "whois.nic.cz",
"de" => "whois.nic.de",
"fr" => "whois.nic.fr",
"hu" => "whois.nic.hu",
"ie" => "whois.domainregistry.ie",
"il" => "whois.isoc.org.il",
"in" => "whois.ncst.ernet.in",
"ir" => "whois.nic.ir",
"mc" => "whois.ripe.net",
"to" => "whois.tonic.to",
"tv" => "whois.tv",
"ru" => "whois.ripn.net",
"org" => "whois.pir.org",
"aero" => "whois.information.aero",
"nl" => "whois.domain-registry.nl"
);
if (!isset($servers[$ext])){
die(\'Error: No matching nic server found!\');
}
$nic_server = $servers[$ext];
$output = \'\';
// connect to whois server:
if ($conn = fsockopen ($nic_server, 43)) {
fputs($conn, $domain."\r\n");
while(!feof($conn)) {
$output .= fgets($conn,128);
}
fclose($conn);
}
else { die(\'Error: Could not connect to \' . $nic_server . \'!\'); }
return $output;
} |
语法：
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<?php$domain = "http://www.blog.koonk.com";
$result = whois_query($domain);
print_r($result);
?> |
9. 验证邮箱地址
有时候，当在网站填写表单，用户可能会输入错误的邮箱地址，这个函数可以验证邮箱地址是否有效。
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function is_validemail($email)
{$check = 0;
if(filter_var($email,FILTER_VALIDATE_EMAIL))
{$check = 1;
}return $check;
} |
语法：
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<?php$email = "blog@koonk.com";
$check = is_validemail($email);
echo $check;
// If the output is 1, then email is valid.?> |
10. 获取用户的真实 IP
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function getRealIpAddr()
{ if (!emptyempty($_SERVER[\'HTTP_CLIENT_IP\']))
{
$ip=$_SERVER[\'HTTP_CLIENT_IP\'];
}
elseif (!emptyempty($_SERVER[\'HTTP_X_FORWARDED_FOR\']))
//to check ip is pass from proxy
{
$ip=$_SERVER[\'HTTP_X_FORWARDED_FOR\'];
}
else {
$ip=$_SERVER[\'REMOTE_ADDR\'];
}
return $ip;
} |
语法：
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<?php$ip = getRealIpAddr();
echo $ip;
?> |
11. 转换 URL：从字符串变成超链接
如果你正在开发论坛，博客或者是一个常规的表单提交，很多时候都要用户访问一个网站。使用这个函数，URL 字符串就可以自动的转换为超链接。
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function makeClickableLinks($text)
{ $text = eregi_replace(\'(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)\',
\'<a href="\1">\1</a>\', $text);
$text = eregi_replace(\'([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)\',
\'\1<a href="http://\2">\2</a>\', $text);
$text = eregi_replace(\'([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})\',
\'<a href="mailto:\1">\1</a>\', $text);
return $text;
} |
语法：
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<?php$text = "This is my first post on http://blog.koonk.com";
$text = makeClickableLinks($text);
echo $text;
?> |
12. 阻止多个 IP 访问你的网站
这个代码片段可以方便你禁止某些特定的 IP 地址访问你的网站
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if ( !file_exists(\'blocked_ips.txt\') ) {
$deny_ips = array(
\'127.0.0.1\',
\'192.168.1.1\',
\'83.76.27.9\',
\'192.168.1.163\'
);
} else {
$deny_ips = file(\'blocked_ips.txt\');
}// read user ip adress:$ip = isset($_SERVER[\'REMOTE_ADDR\']) ? trim($_SERVER[\'REMOTE_ADDR\']) : \'\';
// search current IP in $deny_ips arrayif ( (array_search($ip, $deny_ips))!== FALSE ) {
// address is blocked:
echo \'Your IP adress (\'.$ip.\') was blocked!\';
exit;
} |
13. 强制性文件下载
如果你需要下载特定的文件而不用另开新窗口，下面的代码片段可以帮助你。
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function force_download($file)
{ $dir = "../log/exports/";
if ((isset($file))&&(file_exists($dir.$file))) {
header("Content-type: application/force-download");
header(\'Content-Disposition: inline; filename="\' . $dir.$file . \'"\');
header("Content-Transfer-Encoding: Binary");
header("Content-length: ".filesize($dir.$file));
header(\'Content-Type: application/octet-stream\');
header(\'Content-Disposition: attachment; filename="\' . $file . \'"\');
readfile("$dir$file");
} else {
echo "No file selected";
}
} |
语法：
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<phpforce_download("image.jpg");
?> |
14. 创建 JSON 数据
使用下面的 PHP 片段可以创建 JSON 数据，可以方便你创建移动应用的 Web 服务
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$json_data = array (\'id\'=>1,\'name\'=>"Mohit");
echo json_encode($json_data);
|
15. 压缩 zip 文件
使用下面的 PHP 片段可以即时压缩 zip 文件
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function create_zip($files = array(),$destination = \'\',$overwrite = false) {
//if the zip file already exists and overwrite is false, return false
if(file_exists($destination) && !$overwrite) { return false; }
//vars
$valid_files = array();
//if files were passed in...
if(is_array($files)) {
//cycle through each file
foreach($files as $file) {
//make sure the file exists
if(file_exists($file)) {
$valid_files[] = $file;
}
}
}
//if we have good files...
if(count($valid_files)) {
//create the archive
$zip = new ZipArchive();
if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
return false;
}
//add the files
foreach($valid_files as $file) {
$zip->addFile($file,$file);
}
//debug
//echo \'The zip archive contains \',$zip->numFiles,\' files with a status of \',$zip->status;
//close the zip -- done!
$zip->close();
//check to make sure the file exists
return file_exists($destination);
}
else {
return false;
}
} |
语法：
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<?php$files=array(\'file1.jpg\', \'file2.jpg\', \'file3.gif\');
create_zip($files, \'myzipfile.zip\', true);
?> |
16. 解压文件
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function unzip($location,$newLocation)
{ if(exec("unzip $location",$arr)){
mkdir($newLocation);
for($i = 1;$i< count($arr);$i++){
$file = trim(preg_replace("~inflating: ~","",$arr[$i]));
copy($location.\'/\'.$file,$newLocation.\'/\'.$file);
unlink($location.\'/\'.$file);
}
return TRUE;
}else{
return FALSE;
}
} |
语法：
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<?phpunzip(\'test.zip\',\'unziped/test\'); //File would be unzipped in unziped/test folder
?> |
17. 缩放图片
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function resize_image($filename, $tmpname, $xmax, $ymax)
{ $ext = explode(".", $filename);
$ext = $ext[count($ext)-1];
if($ext == "jpg" || $ext == "jpeg")
$im = imagecreatefromjpeg($tmpname);
elseif($ext == "png")
$im = imagecreatefrompng($tmpname);
elseif($ext == "gif")
$im = imagecreatefromgif($tmpname);
$x = imagesx($im);
$y = imagesy($im);
if($x <= $xmax && $y <= $ymax)
return $im;
if($x >= $y) {
$newx = $xmax;
$newy = $newx * $y / $x;
}
else {
$newy = $ymax;
$newx = $x / $y * $newy;
}
$im2 = imagecreatetruecolor($newx, $newy);
imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);
return $im2;
} |
18. 使用 mail() 发送邮件
之前我们提供了如何使用 Mandrill 发送邮件的 PHP 代码片段，但是如果你不想使用第三方服务，那么可以使用下面的 PHP 代码片段。
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function send_mail($to,$subject,$body)
{$headers = "From: KOONK\r\n";
$headers .= "Reply-To: blog@koonk.com\r\n";
$headers .= "Return-Path: blog@koonk.com\r\n";
$headers .= "X-Mailer: PHP5\n";
$headers .= \'MIME-Version: 1.0\' . "\n";
$headers .= \'Content-type: text/html; charset=iso-8859-1\' . "\r\n";
mail($to,$subject,$body,$headers);
} |
语法：
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<?php$to = "admin@koonk.com";
$subject = "This is a test mail";
$body = "Hello World!";
send_mail($to,$subject,$body);
?> |
19. 把秒转换成天数，小时数和分钟
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function secsToStr($secs) {
if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;$r=$days.\' day\';if($days<>1){$r.=\'s\';}if($secs>0){$r.=\', \';}}
if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.\' hour\';if($hours<>1){$r.=\'s\';}if($secs>0){$r.=\', \';}}
if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.\' minute\';if($minutes<>1){$r.=\'s\';}if($secs>0){$r.=\', \';}}
$r.=$secs.\' second\';if($secs<>1){$r.=\'s\';}
return $r;
} |
语法：
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<?php$seconds = "56789";
$output = secsToStr($seconds);
echo $output;
?> |
20. 数据库连接
连接 MySQL 数据库
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<?php$DBNAME = \'koonk\';
$HOST = \'localhost\';
$DBUSER = \'root\';
$DBPASS = \'koonk\';
$CONNECT = mysql_connect($HOST,$DBUSER,$DBPASS);
if(!$CONNECT)
{ echo \'MySQL Error: \'.mysql_error();
}$SELECT = mysql_select_db($DBNAME);
if(!$SELECT)
{ echo \'MySQL Error: \'.mysql_error();
}?> |
21. 目录清单
使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹
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function list_files($dir)
{ if(is_dir($dir))
{
if($handle = opendir($dir))
{
while(($file = readdir($handle)) !== false)
{
if($file != "." && $file != ".." && $file != "Thumbs.db"/*pesky windows, images..*/)
{
echo \'<a target="_blank" href="\'.$dir.$file.\'">\'.$file.\'</a><br>\'."\n";
}
}
closedir($handle);
}
}
} |
语法：
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<?php list_files("images/"); //This will list all files of images folder
?> |
22. 检测用户语言
使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言
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function get_client_language($availableLanguages, $default=\'en\'){
if (isset($_SERVER[\'HTTP_ACCEPT_LANGUAGE\'])) {
$langs=explode(\',\',$_SERVER[\'HTTP_ACCEPT_LANGUAGE\']);
foreach ($langs as $value){
$choice=substr($value,0,2);
if(in_array($choice, $availableLanguages)){
return $choice;
}
}
}
return $default;
} |
23. 查看 CSV 文件
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function readCSV($csvFile){
$file_handle = fopen($csvFile, \'r\');
while (!feof($file_handle) ) {
$line_of_text[] = fgetcsv($file_handle, 1024);
}
fclose($file_handle);
return $line_of_text;
} |
语法：
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<?php$csvFile = "test.csv";
$csv = readCSV($csvFile);
$a = csv[0][0]; // This will get value of Column 1 & Row 1
?> |
24. 从 PHP 数据创建 CSV 文件
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function generateCsv($data, $delimiter = \',\', $enclosure = \'"\') {
$handle = fopen(\'php://temp\', \'r+\');
foreach ($data as $line) {
fputcsv($handle, $line, $delimiter, $enclosure);
}
rewind($handle);
while (!feof($handle)) {
$contents .= fread($handle, 8192);
}
fclose($handle);
return $contents;
} |
语法：
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<?php$data[0] = "apple";
$data[1] = "oranges";
generateCsv($data, $delimiter = \',\', $enclosure = \'"\');
?> |
25. 解析 XML 数据
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$xml_string="<?xml version=\'1.0\'?>
<moleculedb> <molecule name=\'Benzine\'>
<symbol>ben</symbol>
<code>A</code>
</molecule>
<molecule name=\'Water\'>
<symbol>h2o</symbol>
<code>K</code>
</molecule>
</moleculedb>"; //load the xml string using simplexml function$xml = simplexml_load_string($xml_string);
//loop through the each node of moleculeforeach ($xml->molecule as $record)
{ //attribute are accessted by
echo $record[\'name\'], \' \';
//node are accessted by -> operator
echo $record->symbol, \' \';
echo $record->code, \'<br />\';
} |
26. 解析 JSON 数据
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$json_string=\'{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} \';
$obj=json_decode($json_string);
//print the parsed dataecho $obj->name; //displays rolf
echo $obj->office[0]; //displays google
|
27. 获取当前页面 URL
这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面
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function current_url()
{$url = "http://" . $_SERVER[\'HTTP_HOST\'] . $_SERVER[\'REQUEST_URI\'];
$validURL = str_replace("&", "&", $url);
return validURL;
} |
语法：
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<?phpecho "Currently you are on: ".current_url();
?> |
28. 从任意的 Twitter 账号获取最新的 Tweet
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function my_twitter($username)
{ $no_of_tweets = 1;
$feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;
$xml = simplexml_load_file($feed);
foreach($xml->children() as $child) {
foreach ($child as $value) {
if($value->getName() == "link") $link = $value[\'href\'];
if($value->getName() == "content") {
$content = $value . "";
echo \'<p class="twit">\'.$content.\' <a class="twt" href="\'.$link.\'" title=""> </a></p>\';
}
}
}
} |
语法：
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<?php$handle = "koonktech";
my_twitter($handle);
?> |
29. 转发数量
使用这个 PHP 片段可以检测你的页面 URL 有多少转发数量
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function tweetCount($url) {
$content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url);
$element = new SimpleXmlElement($content);
$retweets = $element->story->url_count;
if($retweets){
return $retweets;
} else {
return 0;
}
} |
语法：
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<?php$url = "http://blog.koonk.com";
$count = tweetCount($url);
return $count;
?> |
30. 计算两个日期的差
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<?php$date1 = date( \'Y-m-d\' );
$date2 = "2015-12-04";
$diff = abs(strtotime($date2) - strtotime($date1));
$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
printf("%d years, %d months, %d days\n", $years, $months, $days);
-------------------------------------------------------- OR$date1 = new DateTime("2007-03-24");
$date2 = new DateTime("2009-06-26");
$interval = $date1->diff($date2);
echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days ";
// shows the total amount of days (not divided into years, months and days like above)echo "difference " . $interval->days . " days ";
-------------------------------------------------------- OR /** * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff()
* implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved.
*
* See here for original code:
* http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup
* http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup
*/
function _date_range_limit($start, $end, $adj, $a, $b, $result)
{ if ($result[$a] < $start) {
$result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1;
$result[$a] += $adj * intval(($start - $result[$a] - 1) / $adj + 1);
}
if ($result[$a] >= $end) {
$result[$b] += intval($result[$a] / $adj);
$result[$a] -= $adj * intval($result[$a] / $adj);
}
return $result;
}function _date_range_limit_days($base, $result)
{ $days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
$days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
_date_range_limit(1, 13, 12, "m", "y", &$base);
$year = $base["y"];
$month = $base["m"];
if (!$result["invert"]) {
while ($result["d"] < 0) {
$month--;
if ($month < 1) {
$month += 12;
$year--;
}
$leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
$days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
$result["d"] += $days;
$result["m"]--;
}
} else {
while ($result["d"] < 0) {
$leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
$days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
$result["d"] += $days;
$result["m"]--;
$month++;
if ($month > 12) {
$month -= 12;
$year++;
}
}
}
return $result;
}function _date_normalize($base, $result)
{ $result = _date_range_limit(0, 60, 60, "s", "i", $result);
$result = _date_range_limit(0, 60, 60, "i", "h", $result);
$result = _date_range_limit(0, 24, 24, "h", "d", $result);
$result = _date_range_limit(0, 12, 12, "m", "y", $result);
$result = _date_range_limit_days(&$base, &$result);
$result = _date_range_limit(0, 12, 12, "m", "y", $result);
return $result;
}/** * Accepts two unix timestamps.
*/
function _date_diff($one, $two)
{ $invert = false;
if ($one > $two) {
list($one, $two) = array($two, $one);
$invert = true;
}
$key = array("y", "m", "d", "h", "i", "s");
$a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one))));
$b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $two))));
$result = array();
$result["y"] = $b["y"] - $a["y"];
$result["m"] = $b["m"] - $a["m"];
$result["d"] = $b["d"] - $a["d"];
$result["h"] = $b["h"] - $a["h"];
$result["i"] = $b["i"] - $a["i"];
$result["s"] = $b["s"] - $a["s"];
$result["invert"] = $invert ? 1 : 0;
$result["days"] = intval(abs(($one - $two)/86400));
if ($invert) {
_date_normalize(&$a, &$result);
} else {
_date_normalize(&$b, &$result);
}
return $result;
}$date = "2014-12-04 19:37:22";
echo \'<pre>\';
print_r( _date_diff( strtotime($date), time() ) );
echo \'</pre>\';
?> |
31. 删除文件夹内容
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function Delete($path)
{ if (is_dir($path) === true)
{
$files = array_diff(scandir($path), array(\'.\', \'..\'));
foreach ($files as $file)
{
Delete(realpath($path) . \'/\' . $file);
}
return rmdir($path);
}
else if (is_file($path) === true)
{
return unlink($path);
}
return false;
} |
语法：
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<?php$path = "images/";
Delete($path); // This will delete images folder along with its contents.
?> |
32. 搜索和高亮字符串中的关键字
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function highlighter_text($text, $words)
{ $split_words = explode( " " , $words );
foreach($split_words as $word)
{
$color = "#4285F4";
$text = preg_replace("|($word)|Ui" ,
"<span style=\"color:".$color.";\"><b>$1</b></span>" , $text );
}
return $text;
} |
语法：
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<?php$string = "I like chocolates and I like apples";
$words = "apple";
echo highlighter_text($string ,$words);
?> |
33. 写入文件
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<?$filename = \'blog.csv\';
$fp = fopen($filename, \'w\');
$output = " Hello ";
$output .= " World! ";
$output .= "\r\n";
fputs($fp, $output);
fclose($fp);
?> |
34. 根据 URL 下载图片
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function imagefromURL($image,$rename)
{$ch = curl_init($image);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
$rawdata=curl_exec ($ch);
curl_close ($ch);
$fp = fopen("$rename",\'w\');
fwrite($fp, $rawdata);
fclose($fp);
} |
语法：
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<?php$url = "http://koonk.com/images/logo.png";
$rename = "koonk.png";
imagefromURL($url,$rename);
?> |
35. 检测 URL 是否有效
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function isvalidURL($url)
{$check = 0;
if (filter_var($url, FILTER_VALIDATE_URL) !== false) {
$check = 1;
}return $check;
} |
语法：
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<?php$url = "http://koonk.com";
$check = checkvalidURL($url);
echo $check; //if returns 1 then URL is valid.
?> |
36. 生成二维码
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function qr_code($data, $type = "TXT", $size =\'150\', $ec=\'L\', $margin=\'0\')
{ $types = array("URL" =--> "http://", "TEL" => "TEL:", "TXT"=>"", "EMAIL" => "MAILTO:");
if(!in_array($type,array("URL", "TEL", "TXT", "EMAIL")))
{
$type = "TXT";
}
if (!preg_match(\'/^\'.$types[$type].\'/\', $data))
{
$data = str_replace("\\", "", $types[$type]).$data;
}
$ch = curl_init();
$data = urlencode($data);
curl_setopt($ch, CURLOPT_URL, \'http://chart.apis.google.com/chart\');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, \'chs=\'.$size.\'x\'.$size.\'&cht=qr&chld=\'.$ec.\'|\'.$margin.\'&chl=\'.$data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
$response = curl_exec($ch);
curl_close($ch);
return $response;
} |
语法：
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<?phpheader("Content-type: image/png");
echo qr_code("http://koonk.com", "URL");
?> |
37. 计算两个地图坐标之间的距离
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function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) {
$theta = $longitude1 - $longitude2;
$miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
$miles = acos($miles);
$miles = rad2deg($miles);
$miles = $miles * 60 * 1.1515;
$feet = $miles * 5280;
$yards = $feet / 3;
$kilometers = $miles * 1.609344;
$meters = $kilometers * 1000;
return compact(\'miles\',\'feet\',\'yards\',\'kilometers\',\'meters\');
} |
语法：
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<?php$point1 = array(\'lat\' => 40.770623, \'long\' => -73.964367);
$point2 = array(\'lat\' => 40.758224, \'long\' => -73.917404);
$distance = getDistanceBetweenPointsNew($point1[\'lat\'], $point1[\'long\'], $point2[\'lat\'], $point2[\'long\']);
foreach ($distance as $unit => $value) {
echo $unit.\': \'.number_format($value,4).\'<br />\';
}?> |
38. 获取一个特定话题标签的所有 Tweets
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function getTweets($hash_tag) {
$url = \'http://search.twitter.com/search.atom?q=\'.urlencode($hash_tag) ;
echo "<p>Connecting to <strong>$url</strong> ...</p>";
$ch = curl_init($url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
$xml = curl_exec ($ch);
curl_close ($ch);
//If you want to see the response from Twitter, uncomment this next part out:
//echo "<p>Response:</p>";
//echo "<pre>".htmlspecialchars($xml)."</pre>";
$affected = 0;
$twelement = new SimpleXMLElement($xml);
foreach ($twelement->entry as $entry) {
$text = trim($entry->title);
$author = trim($entry->author->name);
$time = strtotime($entry->published);
$id = $entry->id;
echo "<p>Tweet from ".$author.": <strong>".$text."</strong> <em>Posted ".date(\'n/j/y g:i a\',$time)."</em></p>";
}
return true ;
} |
39. 添加 th,st,nd 或者 rd 作为数字的后缀
Friday the 13th
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function ordinal($cdnl){
$test_c = abs($cdnl) % 10;
$ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) ? \'th\'
: (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1)
? \'th\' : \'st\' : \'nd\' : \'rd\' : \'th\'));
return $cdnl.$ext;
} |
语法：
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<?php$number = 10;
echo ordinal($number); //output is 10th
?> |
40. 限制文件下载的速度
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<?php// local file that should be send to the client$local_file = \'test-file.zip\';
// filename that the user gets as default$download_file = \'your-download-name.zip\';
// set the download rate limit (=> 20,5 kb/s)$download_rate = 20.5;
if(file_exists($local_file) && is_file($local_file)) {
// send headers
header(\'Cache-control: private\');
header(\'Content-Type: application/octet-stream\');
header(\'Content-Length: \'.filesize($local_file));
header(\'Content-Disposition: filename=\'.$download_file);
// flush content
flush();
// open file stream
$file = fopen($local_file, "r");
while(!feof($file)) {
// send the current file part to the browser
print fread($file, round($download_rate * 1024));
// flush the content to the browser
flush();
// sleep one second
sleep(1);
}
// close file stream
fclose($file);}
else {
die(\'Error: The file \'.$local_file.\' does not exist!\');
}?> |
41. 把文本转换成图片
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<?phpheader("Content-type: image/png");
$string = $_GET[\'text\'];
$im = imagecreatefrompng("images/button.png");
$color = imagecolorallocate($im, 255, 255, 255);
$px = (imagesx($im) - 7.5 * strlen($string)) / 2;
$py = 9;
$fontSize = 1;
imagestring($im, fontSize, $px, $py, $string, $color);
imagepng($im);
imagedestroy($im);
?> |
42. 获取远程文件的大小
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function remote_filesize($url, $user = "", $pw = "")
{ ob_start();
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
if(!empty($user) && !empty($pw))
{
$headers = array(\'Authorization: Basic \' . base64_encode("$user:$pw"));
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
}
$ok = curl_exec($ch);
curl_close($ch);
$head = ob_get_contents();
ob_end_clean();
$regex = \'/Content-Length:\s([0-9].+?)\s/\';
$count = preg_match($regex, $head, $matches);
return isset($matches[1]) ? $matches[1] : "unknown";
} |
语法：
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<?php$file = "http://koonk.com/images/logo.png";
$size = remote_filesize($url);
echo $size;
?> |
43. 使用 imagebrick 进行 pdf 到图像的转换
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<?php$pdf_file = \'./pdf/demo.pdf\';
$save_to = \'./jpg/demo.jpg\'; //make sure that apache has permissions to write in this folder! (common problem)
//execute ImageMagick command \'convert\' and convert PDF to JPG with applied settingsexec(\'convert "\'.$pdf_file.\'" -colorspace RGB -resize 800 "\'.$save_to.\'"\', $output, $return_var);
if($return_var == 0) { //if exec successfuly converted pdf to jpg
print "Conversion OK";
}else print "Conversion failed.<br />".$output;
?> |
44. 使用 tinyurl 生成短网址
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function get_tiny_url($url)
{ $ch = curl_init();
$timeout = 5;
curl_setopt($ch,CURLOPT_URL,\'http://tinyurl.com/api-create.php?url=\'.$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
} |
语法：
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<?php$url = "http://blog.koonk.com/2015/07/Hello-World";
$tinyurl = get_tiny_url($url);
echo $tinyurl;
?> |
45. youtube 下载链接生成器
使用下面的 PHP 片段可以让你的用户下载 Youtube 视频
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function str_between($string, $start, $end)
{ $string = " ".$string; $ini = strpos($string,$start); if ($ini == 0) return ""; $ini += strlen($start); $len = strpos($string,$end,$ini) - $ini; return substr($string,$ini,$len); }
function get_youtube_download_link(){
$youtube_link = $_GET[\'youtube\'];
$youtube_page = file_get_contents($youtube_link);
$v_id = str_between($youtube_page, "&video_id=", "&");
$t_id = str_between($youtube_page, "&t=", "&");
$flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id";
$hq_flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=6";
$mp4_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=18";
$threegp_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=17";
echo "\t\tDownload (right-click > save as):\n\t\t";
echo "<a href=\"$flv_link\">FLV</a>\n\t\t";
echo "<a href=\"$hq_flv_link\">HQ FLV (if available)</a>\n\t\t";
echo "<a href=\"$mp4_link\">MP4</a>\n\t\t";
echo "<a href=\"$threegp_link\">3GP</a><br><br>\n";
} |
46. Facebook 样式的时间戳
Facebook (x mins age, y hours ago etc)
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function nicetime($date)
{ if(empty($date)) {
return "No date provided";
}
$periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
$lengths = array("60","60","24","7","4.35","12","10");
$now = time();
$unix_date = strtotime($date);
// check validity of date
if(empty($unix_date)) {
return "Bad date";
}
// is it future date or past date
if($now > $unix_date) {
$difference = $now - $unix_date;
$tense = "ago";
} else {
$difference = $unix_date - $now;
$tense = "from now";
}
for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
$difference /= $lengths[$j];
}
$difference = round($difference);
if($difference != 1) {
$periods[$j].= "s";
}
return "$difference $periods[$j] {$tense}";
} |
语法：
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<?php$date = "2015-07-05 03:45";
$result = nicetime($date); // 2 days ago
?> |
via blog.koonk.com