Check file exists from url

check-it.php

<?php
/*
* Method 1: use curl, it must return 200 for http return code
*/
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if( $httpCode == 200 ){ echo "File exists"; }


/*
* Method 2: use get_headers
*/
$header_response = get_headers($url, 1);
if ( strpos( $header_response[0], "404" ) !== false ) {
  echo 'File does NOT exist';
}else {
  echo 'File exists';
}


/*
* Method 3: use fopen
*/
$file_exists = (@fopen($url, "r")) ? true : false;


/*
* Method 4: use getimagesize
*/
$imageArray = getimagesize($url);
if($imageArray[0]){
    echo "File exists";
    //print_r($imageArray);
}
else{
    echo "File does NOT exist";
}


/*
* Method 5: use getimagesize
*/
if (false === file_get_contents($url,0,null,0,1)) {
    $image = $default_image;
}