imagecreatefromwbmp() returns an image identifier representing the image obtained from the given filename.
imagecreatefromwbmp() 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 WBMP:
注: WBMP support is only available if PHP was compiled against GD-1.8 or later.
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 I支援URL協定的列表。
警告 |
PHP 4.3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。 |