Unix and Linux Discussions Tagged with image |
|
Thread / Thread Starter |
Last Post |
Replies |
Views |
Forum |
|
|
|
2 |
2,580 |
UNIX for Beginners Questions & Answers |
|
|
|
0 |
11,102 |
What is on Your Mind? |
|
|
|
3 |
5,679 |
Web Development |
|
|
|
2 |
1,514 |
Programming |
|
|
|
4 |
2,287 |
Solaris |
|
|
|
3 |
5,080 |
Solaris |
|
|
|
0 |
9,113 |
FAQ Submission Queue |
|
|
|
3 |
1,630 |
Shell Programming and Scripting |
|
|
|
4 |
8,473 |
Programming |
|
|
|
5 |
4,183 |
Programming |
|
|
|
8 |
16,161 |
Shell Programming and Scripting |
|
|
|
3 |
2,323 |
UNIX for Dummies Questions & Answers |
|
|
|
1 |
7,899 |
Shell Programming and Scripting |
|
|
|
3 |
5,774 |
UNIX for Advanced & Expert Users |
|
|
|
5 |
3,917 |
UNIX for Dummies Questions & Answers |
|
|
|
0 |
811 |
Software Releases - RSS News |
|
|
|
0 |
654 |
Software Releases - RSS News |
|
|
|
0 |
1,086 |
Software Releases - RSS News |
|
|
|
0 |
1,808 |
Software Releases - RSS News |
|
|
|
0 |
1,069 |
Software Releases - RSS News |
|
|
|
0 |
1,426 |
UNIX and Linux RSS News |
|
|
|
1 |
2,345 |
Shell Programming and Scripting |
|
|
|
0 |
764 |
Software Releases - RSS News |
|
|
|
0 |
825 |
Software Releases - RSS News |
|
|
|
3 |
6,172 |
AIX |
|
|
|
0 |
1,986 |
UNIX and Linux RSS News |
|
|
|
0 |
884 |
Software Releases - RSS News |
|
|
|
0 |
653 |
Software Releases - RSS News |
|
|
|
0 |
672 |
Software Releases - RSS News |
|
|
|
0 |
1,068 |
Software Releases - RSS News |
|
|
|
0 |
777 |
Software Releases - RSS News |
|
|
|
2 |
3,758 |
Linux |
|
|
|
0 |
1,965 |
UNIX and Linux RSS News |
|
|
|
0 |
1,066 |
Software Releases - RSS News |
|
|
|
0 |
790 |
Software Releases - RSS News |
|
|
|
0 |
874 |
Software Releases - RSS News |
|
|
|
0 |
723 |
Software Releases - RSS News |
|
|
|
0 |
1,307 |
UNIX and Linux RSS News |
|
|
|
0 |
622 |
Software Releases - RSS News |
|
|
|
0 |
1,171 |
Software Releases - RSS News |
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)