imagecreatefrompng -- Create a new image from file or URL
Description
resource imagecreatefrompng ( string filename )
imagecreatefrompng() returns an image identifier representing the image obtained from the given filename.
imagecreatefrompng() 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 PNG:
Example 1. Example to handle an error during creation (courtesy vic at zymsys dot com)
<?php functionLoadPNG($imgname)
{ $im= @imagecreatefrompng($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;
} ?>
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.
