PHP 注意：导入数据时未定义偏移量

Question

这在昨晚之前一直运行良好，但似乎源文件已更改，因此我更改了爆炸以尝试修复它，但仍然出现错误。

源代码定义告诉我这些字段是：

#export_date^Aapplication_id^Alanguage_code^Atitle^Adescription^Arelease_notes^Acompany_url^Asupport_url^Ascreenshot_url_1^Ascreenshot_url_2^Ascreenshot_url_3^Ascreenshot_url_4^Ascreenshot_width_height_1^Ascreenshot_width_height_2^Ascreenshot_width_height_3^Ascreenshot_width_height_4^Aipad_screenshot_url_1^Aipad_screenshot_url_2^Aipad_screenshot_url_3^Aipad_screenshot_url_4^Aipad_screenshot_width_height_1^Aipad_screenshot_width_height_2^Aipad_screenshot_width_height_3^Aipad_screenshot_width_height_4^B

#dbTypes:BIGINT^AINTEGER^AVARCHAR(20)^AVARCHAR(1000)^ALONGTEXT^ALONGTEXT^AVARCHAR(1000)^AVARCHAR(1000)^AVARCHAR(1000)^AVARCHAR(1000)^AVARCHAR(1000)^AVARCHAR(1000)^AVARCHAR(20)^AVARCHAR(20)^AVARCHAR(20)^AVARCHAR(20)^AVARCHAR(1000)^AVARCHAR(1000)^AVARCHAR(1000)^AVARCHAR(1000)^AVARCHAR(20)^AVARCHAR(20)^AVARCHAR(20)^AVARCHAR(20)^B

我的代码是

$eoldelimiter = chr(2) . "\n";
$delimiter = chr(1);
    while (!feof($fp3)) {
        $line = stream_get_line($fp3,8000,$eoldelimiter); 
        if ($line[0] === '#') continue;  //Skip lines that start with # 
        list($export_date, $application_id, $language_code, $title, $description, $release_notes, $company_url, $suppport_url, $screenshot_url_1, $screenshot_url_2, $screenshot_url_3, $screenshot_url_4, $screenshot_width_height_1, $screenshot_width_height_2, $screenshot_width_height_3, $screenshot_width_height_4,$ipadscreenshot_url_1, $ipadscreenshot_url_2, $ipadscreenshot_url_3, $ipadscreenshot_url_4, $ipadscreenshot_width_height_1, $ipadscreenshot_width_height_2, $ipadscreenshot_width_height_3, $ipadscreenshot_width_height_4 ) = explode($delimiter, $line);
    } // end while statement

我在屏幕上看到的错误是

PHP 注意：未定义的偏移量：23 in /var/www/vhosts/httpdocs/fred/daily_iapps_to_mysql.php 在第 73 行

注意：未定义的偏移量：23 英寸 /var/www/vhosts/httpdocs/fred/daily_iapps_to_mysql.php 在第 73 行 PHP 注意：未定义 偏移量：22 英寸 /var/www/vhosts/httpdocs/fred/daily_iapps_to_mysql.php 在第 73 行

注意：未定义的偏移量：22 英寸 /var/www/vhosts/httpdocs/fred/daily_iapps_to_mysql.php 在第 73 行 PHP 注意：未定义 偏移量：21 英寸 /var/www/vhosts/httpdocs/fred/daily_iapps_to_mysql.php 在第 73 行

注意：未定义的偏移量：21 英寸 /var/www/vhosts/httpdocs/fred/daily_iapps_to_mysql.php 在第 73 行 PHP 注意：未定义 偏移量：20 英寸 /var/www/vhosts/httpdocs/fred/daily_iapps_to_mysql.php 在第 73 行

注意：未定义的偏移量：20 英寸 /var/www/vhostshttpdocs/fred/daily_iapps_to_mysql.php 在第 73 行 PHP 注意：未定义 偏移量：19 英寸 /var/www/vhosts/httpdocs/fred/daily_iapps_to_mysql.php 在第 73 行

Answer 1

除了M42's answer：我建议使用类似的东西

$eoldelimiter = chr(2) . "\n";
$delimiter = chr(1);
$cols = array( // you can even derive this from the comment line ...if you want to.
  'export_date', 'application_id', 'language_code', 'title',
  'description', 'release_notes', 'company_url', 'suppport_url',
  'screenshot_url_1', 'screenshot_url_2', 'screenshot_url_3', 'screenshot_url_4',
  'screenshot_width_height_1', 'screenshot_width_height_2', 'screenshot_width_height_3', 'screenshot_width_height_4',
  'ipadscreenshot_url_1', 'ipadscreenshot_url_2', 'ipadscreenshot_url_3', 'ipadscreenshot_url_4',
  'ipadscreenshot_width_height_1', 'ipadscreenshot_width_height_2', 'ipadscreenshot_width_height_3', 'ipadscreenshot_width_height_4'
);

$fp3 = fopen('test.txt', 'rb');
$data = array();
while( !feof($fp3) ) {
  $line = stream_get_line($fp3, 8000, $eoldelimiter); 
  if ( '#'===$line[0] ) {
    continue;
  }

  $row = explode($delimiter, $line);
  if ( count($row) != count($cols) ) {
    echo 'wrong number of fields: (', count($row), ') ', $line, "\n";
  }
  else {
    $row = array_combine($cols, $row);
  }
  $data[] = $row;
}

而不是使用24个自变量和list()

---

更新：您可能对 MySQL 的 LOAD DATA INFILE 和/或准备好的参数化语句感兴趣，例如通过PHP Data Objects (pdo).
但无论如何，这是一个用于构建查询字符串的示例（示例，不是生产代码）...

$eoldelimiter = chr(2) . "\n";
$delimiter = chr(1);
$cols = array( // you can even derive this from the comment line ...if you want to.
  'export_date', 'application_id', 'language_code', 'title',
  'description', 'release_notes', 'company_url', 'suppport_url',
  'screenshot_url_1', 'screenshot_url_2', 'screenshot_url_3', 'screenshot_url_4',
  'screenshot_width_height_1', 'screenshot_width_height_2', 'screenshot_width_height_3', 'screenshot_width_height_4',
  'ipadscreenshot_url_1', 'ipadscreenshot_url_2', 'ipadscreenshot_url_3', 'ipadscreenshot_url_4',
  'ipadscreenshot_width_height_1', 'ipadscreenshot_width_height_2', 'ipadscreenshot_width_height_3', 'ipadscreenshot_width_height_4'
);
$mysql = mysql_connect(...) or trigger_error(mysql_error());
mysql_select_db('test', $mysql) or trigger_error(mysql_error($mysql));

$sql_pre= 'INSERT INTO foo (' . join($cols, ',') . ') VALUES (';
$fp3 = fopen('test.txt', 'rb') or trigger_error('fopen failed');
while( !feof($fp3) ) {
  $line = stream_get_line($fp3, 8000, $eoldelimiter); 
  if ( '#'===$line[0] ) {
    continue;
  }

  $row = explode($delimiter, $line);
  if ( count($row) != count($cols) ) {
    echo 'wrong number of fields: (', count($row), ') ', $line, "\n";
  }
  else {
    // the & in &$col will only work with php5+
     foreach( $row as &$col ) {   
       $col = "'".mysql_real_escape_string($col, $mysql)."'";
     }
    $sql = $sql_pre . join(',', $row) . ')';
    echo $sql, "\n";
  }
}

Answer 2

似乎explode($delimiter, $line) 没有给出正确数量的元素。

你应该print_rexplode的结果，看看是不是这样。