imagegd
(PHP 4 >= 4.0.7, PHP 5, PHP 7, PHP 8)
imagegd — Output GD image to browser or file
Descrizione
Outputs a GD image to the given file.
Elenco dei parametri
-
image -
Una risorsa immagine, restituita da una delle funzioni di creazione immagine, come imagecreatetruecolor().
-
file -
Il percorso in cui salvare il file. Se non è impostato o è
null, viene restituito il flusso raw dell'immagine.
Valori restituiti
Restituisce true in caso di successo, false in caso di fallimento.
However, if libgd fails to output the image, this function returns true.
Log delle modifiche
| Versione | Descrizione |
|---|---|
| 8.0.3 |
file is now nullable.
|
| 8.0.0 |
image expects a GdImage
instance now; previously, a valid gd resource was expected.
|
| 7.2.0 | imagegd() now allows to output truecolor images. Formerly, these have been implicitly converted to palette. |
Esempi
Example #1 Outputting a GD image
<?php
// Create a blank image and add some text
$im = imagecreatetruecolor(120, 20);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, "A Simple Text String", $text_color);
// Output the image
imagegd($im);
// Free up memory
imagedestroy($im);
?>
Example #2 Saving a GD image
<?php
// Create a blank image and add some text
$im = imagecreatetruecolor(120, 20);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, "A Simple Text String", $text_color);
// Save the gd image
// The file format for GD images is .gd, see http://www.libgd.org/GdFileFormats
imagegd($im, 'simple.gd');
// Free up memory
imagedestroy($im);
?>Note
Nota:
The GD format is commonly used to allow fast loading of parts of images. Note that the GD format is only usable in GD-compatible applications.
The GD and GD2 image formats are proprietary image formats of libgd. They have to be regarded obsolete, and should only be used for development and testing purposes.
Vedere anche:
- imagegd2() - Output GD2 image to browser or file
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