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imagecreatefromgif -- Create a new image from file or URL
Description
resource imagecreatefromgif ( string filename)
imagecreatefromgif() returns an image identifier
representing the image obtained from the given filename.
imagecreatefromgif() returns an empty string
on failure. It also outputs an error message, which unfortunately
displays as a broken link in a browser. To ease debugging the
following example will produce an error GIF:
Example 1.
Example to handle an error during creation (courtesy
vic at zymsys dot com)
<?php function LoadGif ($imgname) { $im = @imagecreatefromgif ($imgname); /* Attempt to open */ if (!$im) { /* See if it failed */ $im = imagecreate (150, 30); /* Create a blank image */ $bgc = imagecolorallocate ($im, 255, 255, 255); $tc = imagecolorallocate ($im, 0, 0, 0); imagefilledrectangle ($im, 0, 0, 150, 30, $bgc); /* Output an errmsg */ imagestring ($im, 1, 5, 5, "Error loading $imgname", $tc); } return $im; } ?>
Note:
Since all GIF support was removed from the GD library in
version 1.6, this function is not available if you are using
that version of the GD library.
Tip: You can use a URL as a
filename with this function if the fopen wrappers have been enabled.
See fopen() for more details on how to specify
the filename and Appendix L for a list of supported
URL protocols.
Warning
Windows versions of PHP
prior to PHP 4.3.0 do not support accessing remote files via this function, even if
allow_url_fopen is enabled.
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