php獲取圖片主題顏色

1、hp獲取圖片主題顏色文章簡介文章簡介本文提供一個獲取圖片主題顏色的 php 工具類。使用場景比如做一個服裝 app 或者網(wǎng)站，需要根據(jù)顏色對商品進(jìn)行分類。用戶點(diǎn)擊紅色分類按鈕， 出現(xiàn)紅色的衣服， 點(diǎn)擊綠色分類按鈕展示綠色的衣服。當(dāng)然可以人工對商品進(jìn)行顏色分類， 但是在商品居多的情況下， 還是得借助代碼自動識別。代碼實(shí)例（ 文章中代碼塊可左右滑動）(1) 目錄結(jié)構(gòu)(2) 工具類： pictureColor.php(2) 工具類： pictureColor.phpclass class pictureColor/*/* 獲取顏色使用庫類型*/public public $type = gd;/*/

2、* 十六進(jìn)制*/public public $hex = array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F);/*/* 獲得圖片色系* 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);/*/* 取得圖片十六進(jìn)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轉(zhuǎn) 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對應(yīng)顏色名稱* param array* param array $hsl* return string* return string*/*/public functionpublic function getColorName($hsl)$colorarr = $colorarr = array(0, 100, 50 0, 100, 50 = 紅色,30, 100, 50 30, 100, 50 = 橙色,60, 100, 50 60, 100, 50 = 黃色,120, 100, 75 120, 100, 75 = 綠

12、色,240,100,25 = 藍(lán)色,300,100,25 = 紫色,255,152,191 = 粉紅,/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) 調(diào)用工具類： index.php/(3) 調(diào)用工具類： index.php/引入工具類include_once ./pictureColor.php;$pictureColor = new pictureColor();$picUrls =$picUrls = array(.picsa.jpg,.picsb.jpg,.picsc.jpg);foreach foreach ($picUrls as $k