PHP ʖ²ἯTH º󍋼/A imagecreatefrompng Description 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: =ד 1. Example to handle an error during creation (courtesy vic@zymsys.com) 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;} ¾¯¸漯B Windows °汾µĠPHP Ԛ 4.3 °斮ǰ²»֧³ָú¯ʽµĔ¶³̎ļþ·Îʣ¬¼´ʹ allow_url_fopen ѡϮґ±»¼¤» º󍋼/A ưµ㼯A imagecreatefromjpeg ɏһ¼¶ imagecreatefromstring