php获取图片主题颜色

1、hp获取图片主题颜色文章简介文章简介本文提供一个获取图片主题颜色的 php 工具类。使用场景比如做一个服装 app 或者网站，需要根据颜色对商品进行分类。用户点击红色分类按钮， 出现红色的衣服， 点击绿色分类按钮展示绿色的衣服。当然可以人工对商品进行颜色分类， 但是在商品居多的情况下， 还是得借助代码自动识别。代码实例（ 文章中代码块可左右滑动）(1) 目录结构(2) 工具类： pictureColor.php(2) 工具类： pictureColor.phpclass class pictureColor/*/* 获取颜色使用库类型*/public public $type = gd;/*/

2、* 十六进制*/public public $hex = array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F);/*/* 获得图片色系* param string* param string $file* return string* return string*/*/public functionpublic function colorName($file)if if (empty($file) return falsereturn false;$rgb =$rgb = $this-getRGB($file);$hsl = $this-

3、RGB2HSL($rgb);returnreturn $this-getColorName($hsl);/*/* 取得图片十六进制* param string* param string $file* return string* return string*/*/public function hexName($file)try try if if (empty($file) return falsereturn false;for ($y = 0; $y $h; $y+) for ($y = 0; $y getRGB($file, $this-type);$color =$color =

4、$this-RGB2Hex($rgb);if if (strlen($color) 6) $color = substr($color, 1, 6);return return $color; catch (Exception $e) echo echo $e;/*/* RGB* param string* param string $file* param string $type* param string $type gd/gm* return array* return array*/*/public functionpublic function getRGB($file)if if

5、 (empty($file) return falsereturn false;$imageSize =$imageSize = getimagesize($file);if if ($imageSizemime = image/jpeg) $img= imagecreatefromjpeg($file); elseif($imageSizemime = image/png)$img= imagecreatefrompng($file); elseif($imageSizemime = image/gif)$img= imagecreatefromgif($file);$w=imagesx($

6、img);$h=imagesy($img);$r=$g = $b = 0;for for ($x = 0; $x $r += $rgb 16;$g += $rgb $g += $rgb 8 & 255;$b += $rgb & 255;$pxls = $w * $h;$pxls = $w * $h;$r = (round($r /$r = (round($r / $pxls);list($r, $g, $b) = $rgb;$delta = $max - $min;list($r, $g, $b) = $rgb;$delta = $max - $min;$g = (round($g /$pxl

7、s);$b = (round($b /$pxls);return array(0= $r, 1 = $g, 2=$b);public functionpublic function RGB2Hex($rgb)$hexColor = $hexColor = ;$hex = $hex = $this-hex;for for ($i = 0; $i 16) $r = $c % $r = $c % 16;$c = ($c / $c = ($c / 16) 0;array_push($hexAr, $hexarray_push($hexAr, $hex $r);array_push($hexAr, $h

8、exarray_push($hexAr, $hex $c);$ret =$ret = array_reverse($hexAr);$item = $item = $ret);$item = str_pad($item, $item = str_pad($item, 2, 0, STR_PAD_LEFT);$hexColor .= $item;$hexColor .= $item;return return $hexColor;/*/* RGB转 HSL*param arrayparam array $rgbreturn array*/*/public functionpublic functi

9、on RGB2HSL($rgb)$r/=255;$g/=255;$b/=255;$max =max($r, $g,$b);$min =min($r, $g,$b);$l = ($max + $min) / $l = ($max + $min) / 2;if if ($delta = 0) $h = $h = 0;$s = $s = 0; else $s = ($l $s = ($l 0.5) ? $delta / ($max + $min) : $delta / - $max - $min);ax - $min);$deltar=($max- $r)/6)+($max/2)/$delta;$d

10、eltag=($max- $g)/6)+($max/2)/$delta;$deltab=($max- $b)/6)+($max/2)/$delta;if if ($r = $max) $h = $deltab -$h = $deltab - $deltag; else if ($g = $max) $h = $h = / 3) + $deltar - $deltab; else if ($b = $max) $h = $h = / 3) + $deltag - $deltar;$h += ($h $h += ($h 1 ? -1 : 0);return arrayreturn array($h

11、 * 360, $s * 100, $l * 100);/*/* HSL对应颜色名称* param array* param array $hsl* return string* return string*/*/public functionpublic function getColorName($hsl)$colorarr = $colorarr = array(0, 100, 50 0, 100, 50 = 红色,30, 100, 50 30, 100, 50 = 橙色,60, 100, 50 60, 100, 50 = 黄色,120, 100, 75 120, 100, 75 = 绿

12、色,240,100,25 = 蓝色,300,100,25 = 紫色,255,152,191 = 粉红,/136, 84, 24 = 棕色,0,0,50 = 灰色,0,0,0 = 黑色,0,0,100 = 白色,);$distarr = $distarr = array();foreach foreach ($colorarr as $key = $val) listlist($h, $s, $l) = $key);$distarr$key =pow($hsl0- $h),2)+pow($hsl1- $s), 2) + pow($hsl2 -$l), 2);asort($distarr);asort($distarr);listlist($key) = each($distarr);return return $colorarr$key;(3) 调用工具类： index.php/(3) 调用工具类： index.php/引入工具类include_once ./pictureColor.php;$pictureColor = new pictureColor();$picUrls =$picUrls = array(.picsa.jpg,.picsb.jpg,.picsc.jpg);foreach foreach ($picUrls as $k