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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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