php 二维数组排序

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php中二维数组重新排序

    public function demo() {        $array = array(            0 => array('id' => '4', 'name' => 'Li', 'age' => '35'),            1 => array('id' => '1', 'name' => 'wang', 'age' => '53'),            2 => array('id' => '3', 'name' => 'meng', 'age' => '50')        );        print_r('原始数组:');        dump($array);        $test = array('id' => '5', 'name' => 'qin', 'age' => '80');        array_push($array, $test); //向二维数组中增加一个元素        print_r('新增元素后数组:');        dump($array);        $array = $this->arraySequence($array); //排序        print_r('重新排序后数组:');        dump($array);    }    /**     * 数组重新排序     * $array 要排序的数组     * $field 排序字段     * $sort 排序方式 SORT_DESC 降序；SORT_ASC 升序     * */    public function arraySequence($array, $field = 'age', $sort = 'SORT_DESC') {        $arr = array();        foreach ($array as $key => $value) {            foreach ($value as $k => $val) {                $arr[$k][$key] = $val;            }        }        array_multisort($arr[$field], constant($sort), $array);        return $array;    }

结果：

原始数组:

array (size=3)  0 =>     array (size=3)      'id' => string '4' (length=1)      'name' => string 'Li' (length=2)      'age' => string '35' (length=2)  1 =>     array (size=3)      'id' => string '1' (length=1)      'name' => string 'wang' (length=4)      'age' => string '53' (length=2)  2 =>     array (size=3)      'id' => string '3' (length=1)      'name' => string 'meng' (length=4)      'age' => string '50' (length=2)

新增元素后数组:

array (size=4)  0 =>     array (size=3)      'id' => string '4' (length=1)      'name' => string 'Li' (length=2)      'age' => string '35' (length=2)  1 =>     array (size=3)      'id' => string '1' (length=1)      'name' => string 'wang' (length=4)      'age' => string '53' (length=2)  2 =>     array (size=3)      'id' => string '3' (length=1)      'name' => string 'meng' (length=4)      'age' => string '50' (length=2)  3 =>     array (size=3)      'id' => string '5' (length=1)      'name' => string 'qin' (length=3)      'age' => string '80' (length=2)

重新排序后数组:

array (size=4)  0 =>     array (size=3)      'id' => string '5' (length=1)      'name' => string 'qin' (length=3)      'age' => string '80' (length=2)  1 =>     array (size=3)      'id' => string '1' (length=1)      'name' => string 'wang' (length=4)      'age' => string '53' (length=2)  2 =>     array (size=3)      'id' => string '3' (length=1)      'name' => string 'meng' (length=4)      'age' => string '50' (length=2)  3 =>     array (size=3)      'id' => string '4' (length=1)      'name' => string 'Li' (length=2)      'age' => string '35' (length=2)

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