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# imagecreatefromgif

(PHP 3, PHP 4 , PHP 5)

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:

範例 1. Example to handle an error during creation (courtesy vic at zymsys dot com)

`<?php
function LoadGif ($imgname)
{
$im = @imagecreatefromgif ($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;
}
?>`

> 注: 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.

> 提示: 如果 fopen wrappers 已啟動，則可藉此函數把檔名當成URL使用。參考 fopen() 有更多關於如何指定檔名的細節和附錄 L支援URL協定的列表。

警告
PHP 4.3.0 之前的 Windows PHP版本不支援由此函數存取遠端檔案，即使啟動allow_url_fopen選項。

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