php 定时删除文件实现方法

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/**
 * 在指定的时间过后删除指定的文件
 *
 * @param 
 * @arrange （www.idcnote.com）
 **/
// Define the folder to clean
// (keep trailing slashes)
$captchaFolder  = 'temp/';
 
// Filetypes to check (you can also use *.*)
$fileTypes      = '*.jpg';
 
// Here you can define after how many
// minutes the files should get deleted
$expire_time    = 20; 
 
// Find all files of the given file type
foreach (glob($captchaFolder . $fileTypes) as $Filename) {
 
    // Read file creation time
    $FileCreationTime = filectime($Filename);
 
    // Calculate file age in seconds
    $FileAge = time() - $FileCreationTime; 
 
    // Is the file older than the given time span?
    if ($FileAge > ($expire_time * 60)){
 
        // Now do something with the olders files...
 
        print "The file $Filename is older than $expire_time minutes\n";
 
        // For example deleting files:
        //unlink($Filename);
    }
 
}


/***   来自php教程（www.idcnote.com）   ***/

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