IMAGEISTRUECOLOR(3) 1 IMAGEISTRUECOLOR(3)
imageistruecolor - Finds whether an image is a truecolor image
SYNOPSIS
bool imageistruecolor (resource $image)
DESCRIPTION
imageistruecolor(3) finds whether the image $image is a truecolor image.
PARAMETERS
o $
image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).
RETURN VALUES
Returns TRUE if the $image is truecolor, FALSE otherwise.
EXAMPLES
Example #1
Simple detection of true color image instances using imageistruecolor(3)
<?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).
SEE ALSO
imagecreatetruecolor(3), imagepalettetotruecolor(3).
PHP Documentation Group IMAGEISTRUECOLOR(3)
