imagecreatefromgif
(PHP 3, PHP 4, PHP 5)
imagecreatefromgif -- Create a new image from file or URL
Beskrivelse
resource
imagecreatefromgif ( string filename )
imagecreatefromgif() returns an image identifier
representing the image obtained from the given filename.
To ease debugging the following example will produce an error GIF:
Eksempel 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; } header("Content-Type: image/gif"); $img = LoadGif("bogus.image"); imagegif($img); ?>
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Ovenstående eksempel vil udskrive
noget der ligner: 
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Vink: Du kan bruge en URL som
filnavn med denne funktion, hvis fopen wrappers er slået til.
Se fopen() for flere detaljer omkring hvordan man udformer
filnavnet og Appendiks N for en liste over understøttede
URL-protokoller.
Parameterliste
filename
Path to the GIF image
Returneringsværdier
Returns an image resource identifier on success, FALSE on errors.
Notes
Bemærk:
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.
Advarsel |
Windows
versioner af PHP før PHP 4.3.0 understøtter
ikke adgang til fjernfiler via denne funktion, også selv om
allow_url_fopen er slået til.
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