imageistruecolor

(PHP 4 >= 4.3.2, PHP 5, PHP 7, PHP 8)

imageistruecolorFinds whether an image is a truecolor image

Description

imageistruecolor(GdImage $image): bool

imageistruecolor() finds whether the image image is a truecolor image.

Parameters

image

A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().

Return Values

Returns true if the image is truecolor, false otherwise.

Changelog

Version Description
8.0.0 image expects a GdImage instance now; previously, a valid gd resource was expected.

Examples

Example #1 Simple detection of true color image instances using imageistruecolor()

<?php// $im is an image instance// Check if image is a true color image or notif(!imageistruecolor($im)){    // Create a new true color image instance    $tc = imagecreatetruecolor(imagesx($im), imagesy($im));    // Copy over the pixels    imagecopy($tc, $im, 0, 0, 0, 0, imagesx($im), imagesy($im));    imagedestroy($im);    $im = $tc;    $tc = NULL;    // OR use imagepalettetotruecolor()}// Continue working with image instance?>

See Also