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PHP二维数组怎么按某个字段排序?

WBOY
Release: 2016-06-13 09:51:29
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数据排序有很多现成的函数,但是如果想对指定字段进行排序就没有内置函数了,下面我整理了一些相关的数组排序函数与大家一起交流学习学习。

先不说别的我们直接看二维数组按某个字段排序实例

 代码如下 复制代码
    /**  
     * @author yebihai http://www.bKjia.c0m
     * @desc 按二维数组的某一个字段进行升降排序  
     * @data  
     *      $testData = array(  
                array('price'=>19),  
                array('price'=>121),  
                array('price'=>115),  
                array('price'=>113),  
                array('price'=>112)  
            );  
     */    
    class sortClass{    
        //升序    
        function sortArrayAsc($preData,$sortType='price'){    
            $sortData = array();    
            foreach ($preData as $key_i => $value_i){    
                $price_i = $value_i[$sortType];    
                $min_key = '';    
                $sort_total = count($sortData);    
                foreach ($sortData as $key_j => $value_j){    
                    if($price_i                         $min_key = $key_j+1;    
                        break;    
                    }    
                }    
                if(empty($min_key)){  
                    array_push($sortData, $value_i);     
                }else {    
                    $sortData1 = array_slice($sortData, 0,$min_key-1);     
                    array_push($sortData1, $value_i);    
                    if(($min_key-1)                         $sortData2 = array_slice($sortData, $min_key-1);     
                        foreach ($sortData2 as $value){    
                            array_push($sortData1, $value);    
                        }    
                    }    
                    $sortData = $sortData1;    
                }    
            }    
            return $sortData;    
        }    
        //降序    
        function sortArrayDesc($preData,$sortType='price'){    
            $sortData = array();    
            foreach ($preData as $key_i => $value_i){    
                $price_i = $value_i[$sortType];    
                $min_key = '';    
                $sort_total = count($sortData);    
                foreach ($sortData as $key_j => $value_j){    
                    if($price_i>$value_j[$sortType]){    
                        $min_key = $key_j+1;    
                        break;    
                    }    
                }    
                if(empty($min_key)){    
                    array_push($sortData, $value_i);     
                }else {    
                    $sortData1 = array_slice($sortData, 0,$min_key-1);     
                    array_push($sortData1, $value_i);    
                    if(($min_key-1)                         $sortData2 = array_slice($sortData, $min_key-1);     
                        foreach ($sortData2 as $value){    
                            array_push($sortData1, $value);    
                        }    
                    }    
                    $sortData = $sortData1;    
                }    
            }    
            return $sortData;    
        }    
    }    

后面整理一些关于数组排序的函数

数据排序函数有

•sort() 函数用于对数组单元从低到高进行排序。
•rsort() 函数用于对数组单元从高到低进行排序。
•asort() 函数用于对数组单元从低到高进行排序并保持索引关系。
•arsort() 函数用于对数组单元从高到低进行排序并保持索引关系。
•ksort() 函数用于对数组单元按照键名从低到高进行排序。
•krsort() 函数用于对数组单元按照键名从高到低进行排序。
array_multisort() 函数对多个数组或多维数组进行排序

source:php.cn
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