使用 php 随机刷新 1000 次

Question

我已经在 php 中创建了一个生成随机数并已插入到 mysql 中。但是我想在刷新一次时循环它1000次。所有项目都必须存储在数据库中。我该怎么做？

function generateCode($length = 11) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return $randomString;
}
echo $lucky_code=generateCode()."<br/>";

$servername = "localhost";
$username = "root";
$password = "";
$database = "random";

$cnt = mysql_pconnect($servername, $username, $password) or die(mysql_error());
mysql_select_db($database);
mysql_query("INSERT INTO tbl_code(code) VALUES('$lucky_code')",$cnt) or die(mysql_error());

Answer 1

for($i = 0; $i < 1000; $i++)
{
    $lucky_code = generateCode();

    mysql_query("INSERT INTO tbl_code(code) VALUES('$lucky_code')",$cnt) or die(mysql_error());
}

如果您的maximum query size 足够大，您还可以尝试在一个查询中添加所有行，以便只有一个查询（而不是 1000 个查询）：

$lucks_codes = array();
for($i = 0; $i < 1000; $i++) {
    $lucky_codes[] = generateCode();
}

mysql_query("INSERT INTO tbl_code(code) VALUES ('".implode("'), ('", $lucky_codes)."')", $cnt) or die(mysql_error());

还请记住，mysql 扩展名已被弃用。请改用mysqli 或PDO。

Answer 2

您可以在代码前使用set_time_limit 并运行循环 1000 次，如下所示

set_time_limit(0);

function generateCode($length = 11) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return $randomString;
}

$servername = "localhost";
$username = "root";
$password = "";
$database = "random";

$cnt = mysql_pconnect($servername, $username, $password) or die(mysql_error());
mysql_select_db($database);
for ($i = 0; $i < 1000; $i++) {
    $lucky_code = generateCode();
    mysql_query("INSERT INTO tbl_code(code) VALUES('".$lucky_code."')", $cnt) or die(mysql_error());
}