php 检查URL上是否存在文件（图像）

Posted 2021-05-04

<?php

function checkRemoteFile($url) {

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL,$url);
    // don't download content
    curl_setopt($ch, CURLOPT_NOBODY, 1);
    curl_setopt($ch, CURLOPT_FAILONERROR, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $result = curl_exec($ch);
    curl_close($ch);
    
    if($result !== FALSE) {
      return true;
    } else {
      return false;
    }
    
}