PHP实现获取图片颜色值的方法
本例讲述了PHP实现获取图片颜色值的方法,PHP获取图片颜色值检测图片主要颜色是通过imagecreatefromjpeg函数读取图片,再循环获得各个颜色值加以计算实现的。
具体代码如下:
<?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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