充填被裁剪区域为透明色$url = 'http://avatar.csdn.net/D/E/6/1_hero1010.jpg';
$im = imagecreatefromstring(file_get_contents($url));
$c = imagecolorallocate($im, 255, 0, 0);
imagefilledpolygon($im, array(imagesx($im)/2, 0, imagesx($im), imagesy($im)/2, imagesx($im), 0), 3, $c);imagecolortransparent($im, $c);
imagepng($im);
$im = imagecreatefromstring(file_get_contents($url));
$c = imagecolorallocate($im, 255, 0, 0);
imagefilledpolygon($im, array(imagesx($im)/2, 0, imagesx($im), imagesy($im)/2, imagesx($im), 0), 3, $c);imagecolortransparent($im, $c);
imagepng($im);
解决方案 »
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