How to write a remote image grabbing function of PHP
This article mainly explains "how to write a PHP remote image grab function," interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's take you to learn "how to write a PHP remote image grab function"!
The copy code is as follows:
function grabImage($url, $filename = '') {
if($url == '') {
return false; //return false if $url is empty;
}
$ext_name = strrchr($url, '. '); //Get extension of picture
if($ext_name != '.gif' && $ext_name != '.jpg' && $ext_name != '.bmp' && $ext_name != '.png') {
return false; //format is not allowed
}
if($filename == '') {
$filename = time().$ ext_name; //name with timestamp
}
//Start capturing
ob_start();
readfile($url);
$img_data = ob_get_contents();
ob_end_clean();
$size = strlen($img_data);
$local_file = fopen($filename , 'a');
fwrite($local_file, $img_data);
fclose($local_file);
return $filename;
}
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