imageistruecolor

Finds whether an image is a truecolor image

Description

bool imageistruecolor ( resource $image )

imageistruecolor finds whether the image image is a truecolor image.

Parameters

image: An image resource, returned by one of the image creation functions, such as imagecreatetruecolor.

Return Values

Returns TRUE if the image is truecolor, FALSE otherwise.

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 not
if(!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
?>

Notes

Note: This function requires GD 2.0.1 or later (2.0.28 or later is recommended).