imagecreatefrompng
(PHP 3>= 3.0.13, PHP 4 , PHP 5)
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:
Primer 1.
Example to handle an error during creation (courtesy
vic at zymsys dot com)
<?php function LoadPNG($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; } ?>
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Namig: Kot ime datoteke lahko
pri tej funkciji uporabite URL, če je vklopljena funkcija "fopen wrappers".
Oglejte si fopen() za več informacij.
Pozor |
Različica
PHP za okolje Windows trenutno ne podpira
odpiranja oddaljenih datotek, tudi če je nastavitev
allow_url_fopen
vklopljena.
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