本文主要和大家分享php字符串生成图片实例详解，希望能帮助到大家。
function generateimg($source, $text1, $text2, $text3, $font = './msyhbd.ttf') { $date = '' . date ( 'ymd' ) . '/'; $img = $date . md5 ( $source . $text1 . $text2 . $text3 ) . '.jpg'; if (file_exists ( './' . $img )) { return $img; } $main = imagecreatefromjpeg ( $source ); $width = imagesx ( $main ); $height = imagesy ( $main ); $target = imagecreatetruecolor ( $width, $height ); $white = imagecolorallocate ( $target, 255, 255, 255 ); imagefill ( $target, 0, 0, $white ); imagecopyresampled ( $target, $main, 0, 0, 0, 0, $width, $height, $width, $height ); $fontsize = 18;//像素字体 $fontcolor = imagecolorallocate ( $target, 255, 0, 0 );//字的rgb颜色 $fontbox = imagettfbbox($fontsize, 0, $font, $text1);//文字水平居中实质 imagettftext ( $target, $fontsize, 0, ceil(($width - $fontbox[2]) / 2), 190, $fontcolor, $font, $text1 ); $fontbox = imagettfbbox($fontsize, 0, $font, $text2); imagettftext ( $target, $fontsize, 0, ceil(($width - $fontbox[2]) / 2), 370, $fontcolor, $font, $text2 ); $fontbox = imagettfbbox($fontsize, 0, $font, $text3); imagettftext ( $target, $fontsize, 0, ceil(($width - $fontbox[2]) / 2), 560, $fontcolor, $font, $text3 ); //imageantialias($target, true);//抗锯齿，有些php版本有问题，谨慎使用 imagefilledpolygon ( $target, array (10 + 0, 0 + 142, 0, 12 + 142, 20 + 0, 12 + 142), 3, $fontcolor );//画三角形 imageline($target, 100, 200, 20, 142, $fontcolor);//画线 imagefilledrectangle ( $target, 50, 100, 250, 150, $fontcolor );//画矩形 //bof of 合成图片 $child1 = imagecreatefromjpeg ( 'http://gtms01.alicdn.com/tps/i1/t1n0pxfehaxxxxk1nm-357-88.jpg' ); imagecopymerge ( $target, $child1, 0, 400, 0, 0, imagesx ( $child1 ), imagesy ( $child1 ), 100 ); //eof of 合成图片 @mkdir ( './' . $date ); imagejpeg ( $target, './' . $img, 95 ); imagedestroy ( $main ); imagedestroy ( $target ); imagedestroy ( $child1 ); return $img; }generateimg ( 'https://ssl.picture.qingger.com/fi8zmits5c_uvm7wuez5z_0vsdg_', 'aaaaa', 'php文字水平居中', '3个字' );exit ();
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以上就是php字符串生成图片实例详解的详细内容。