Backend Development 2 min read

Using getimagesizefromstring to Retrieve Image Dimensions from a String in PHP

getimagesizefromstring is a PHP function that extracts an image’s width and height from raw image data supplied as a string, mirroring getimagesize but accepting string input; the article explains its parameters, return values, and provides example code comparing file‑based and string‑based usage.

Laravel Tech Community
Laravel Tech Community
Laravel Tech Community
Using getimagesizefromstring to Retrieve Image Dimensions from a String in PHP

The PHP function getimagesizefromstring works like getimagesize but takes the image data as a string instead of a filename.

Parameters:

imagedata : string containing the raw image data.

imageinfo (optional, passed by reference): receives additional information as described in getimagesize .

Return value: an array where index 0 and 1 contain the image width and height respectively; other indexes provide MIME type and optional info.

Example:

backendPHPExampleimage-processinggetimagesizefromstring
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