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PHP根据图片色界在不同位置加水印的方法

Jun 13, 2016 am 08:59 AM
phpdifferentLocationaddpictureexistmethodwatermarkof

PHP根据图片色界在不同位置加水印的方法

   本文实例讲述了PHP根据图片色界在不同位置加水印的方法。分享给大家供大家参考。具体实现方法如下:

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function add_wm($nmw_water, $src_file, $output_file, $x, $y) {

if(file_exists($output_file))

return;

$w1 = MagickGetImageWidth($nmw_water);

$h1 = MagickGetImageHeight($nmw_water);

$nmw =NewMagickWand();

MagickReadImage($nmw, $src_file);

// 默认的加水印位置调整

$lt_w = 50;

$lt_h = 50;

if($x == 0){

$w = MagickGetImageWidth($nmw);

$h = MagickGetImageHeight($nmw);

$x = $w;

$y = $h;

}else{

// 根据具体情况调整

$lt_w = 30;

$lt_h = 40;

}

MagickCompositeImage($nmw, $nmw_water, MW_OverCompositeOp, $x - $w1 - $lt_w, $y - $h1 - $lt_h);

MagickWriteImage($nmw, $output_file);

DestroyMagickWand($nmw);

}

// 还是groovy的eachFileRecurse好用啊

function add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr) {

$dp = dir($to_dir);

while($file=$dp->read()){

if($file != '.' && $file != '..'){

if(is_dir($to_dir . '/' . $file)){

mkdir($output_dir . '/' . $file);

add_wm_recurse($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $arr);

}else{

if(!array_key_exists($to_dir . '/' . $file, $arr)){

continue;

}

$sub_arr = $arr[$to_dir . '/' . $file];

if($sub_arr){

$x = intval($sub_arr[0]);

$y = intval($sub_arr[1]);

add_wm($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $x, $y);

}

}

}

}

$dp->close();

}

$to_dir = './resized';

$output_dir = './output';

// 这个是我用java的ImageIO遍历图片像素获取的符合裤子颜色的区域的坐标array(posX, posY)

$arr = array(

array(50, 50)

);

$water = './water.png';

$nmw_water =NewMagickWand();

MagickReadImage($nmw_water, $water);

add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr);

DestroyMagickWand($nmw_water);

  希望本文所述对大家的php程序设计有所帮助。

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