note 51810 rejected from function.imagecreatetruecolor by betz
| From: | betz@php.net | Date: | Tue, 12 Apr 2005 13:52:46 +0000 |
| Subject: | note 51810 rejected from function.imagecreatetruecolor by betz | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-87906@lists.php.net to get a copy of this message | ||
Note Submitter: gregt at maths dot otago dot ac dot nz
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Using function_exists() doesn't always work.
Consider the following:
echo "a:", function_exists(imagecreate),"<br>";
echo "b:", function_exists(imagecreatetruecolor),"<br>";
echo "c:", function_exists(imagecreatetruecolorrrr),"<br>";
echo phpinfo(8);
This produces the output:
a: 1
b: 1
c:
<snip>
gd
GD Support enabled
GD Version 1.6.2 or higher
FreeType Support enabled
FreeType Linkage with freetype
JPG Support enabled
PNG Support enabled
WBMP Support enabled
When I call imagecreatetruecolor(), I get:
Warning: imagecreatetruecolor(): requires GD 2.0 or later in /home/gregt/public_html/gd/gdtest.php
on line 8
Obviously I don't have a proper implementation of the imagecreatetruecolor function, but there
is still code there to throw an error, so function_exists blindly assumes the function is present.