PHP touch()用法及代碼示例

touch() 函數可以設置指定文件的訪問和修改時間，成功返回true，失敗返回false。

用法

bool touch ( string $filename [, int $time = time() [, int $atime ]] )

此函數可以嘗試將 filename 參數中命名的文件的訪問和修改時間設置為給定的時間值。請注意，無論參數數量如何，訪問時間總是會被修改。

示例1

<?php
   $filename = "/PhpProject/sample.txt";
   if(touch($filename)) {
      echo $filename . " modification time has been changed to present time";
   } else {
      echo "Sorry, could not change modification time of " . $filename;
   }
?>

輸出

/PhpProject/sample.txt modification time has been changed to present time

示例2

<?php
   $time = time() - 3600;
   if (!touch("/PhpProject/sample.txt", $time)) {
      echo "oops, something went wrong...";
   } else {
      echo "Touched file with success";
   }
?>

輸出

Touched file with success