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
<?php function LoadGif ($imgname) { $im = @imagecreatefromgif ($imgname); /* Attempt to open */ if (!$im) { /* See if it failed */ $im = imagecreatetruecolor (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:
GIF support was removed from the GD library in Version 1.6,
and added back in Version 2.0.28. This function is not
available between these versions.
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 M 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.
