PHP getimagesizefromstring() function usage and example

PHP Image Processing

getimagesizefromstring — Get image size information from a string.

Syntax

array getimagesizefromstring ( string $imagedata[, array &$imageinfo ] )

Same getimagesize() Function. The difference is that getimagesizefromstring() takes the string representation of image data as the first parameter, not the filename.

Parameter

• imagedata:String representation of image data.

• imageinfo:See getimagesize() Function.

Example

<?php
$img = 'w3codebox-logo.png';
//　Open in file format
$size_info1　= getimagesize($img);
//　Open in string format
$data = file_get_contents($img);
$size_info2　= getimagesizefromstring($data);
print_r($size_info2);
?>

The output result of the above example is:

Array
(
　　　　[0] =>　290
　　　　[1] =>　69
　　　　[2] =>　3
　　　　[3] => width="290" height="69"
　　　　[bits] =>　8
　　　　[mime] => image/png
)

PHP Image Processing