PHP获取图片颜色值,检测图片主要颜色的代码:

<?php

$i=imagecreatefromjpeg("photo3.jpg");//测试图片,自己定义一个,注意路径

for ($x=0;$x<imagesx($i);$x++) {

    for ($y=0;$y<imagesy($i);$y++) {

        $rgb = imagecolorat($i,$x,$y);

        $r=($rgb >>16) & 0xFF;

        $g=($rgb >> & 0xFF;

        $b=$rgb & 0xFF;

        $rTotal += $r;

        $gTotal += $g;

        $bTotal += $b;

        $total++;

    }

}

$rAverage = round($rTotal/$total);

$gAverage = round($gTotal/$total);

$bAverage = round($bTotal/$total);

//示例:

echo $rAverage;

?>

 

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