PHP two-dimensional array sorting—default natural sorting

What is a two-dimensional array? A two-dimensional array is essentially an array with arrays as array elements, that is, "array of arrays", type specifier array name [constant expression] [constant expression]. A two-dimensional array is also called a matrix, and a matrix with the same number of rows and columns is called a variable square matrix. Symmetric matrix a[i][j] = a[j][i], diagonal matrix: There are zero elements outside the main diagonal of an n-order square matrix. PHP two-dimensional array sorting function, default natural sorting, that is, sort sorting. Here you can specify multiple methods to sort by a certain value in the two-dimensional array. See the program comments below for details.

/**
 * @function 二维数组自然排序
 * @author www.phpernote.com
 * @param array $array 需要排序的数组（二维）
 * @param string key 需要根据哪个键排序
 * @param string order 排序方式（SORT_ASC，SORT_DESC）
 * @param string type 排序方法（SORT_REGULAR，SORT_NUMERIC，SORT_STRING）
 * @return array sorted array.
 */
function phpSortArray($array,$key,$order="SORT_ASC",$type="SORT_REGULAR"){
    if(!is_array($array)||empty($$array)){
        return $array;
    }
    $ArgCount=func_num_args();//返回传递到目前定义函数的参数数目
    for($I=1;$I<$ArgCount;$I++){
        $Arg=func_get_arg($I);
        if(!eregi("SORT",$Arg)){
            $KeyNameList[]=$Arg;
            $SortRule[]=&#39;$&#39;.$Arg;
        }else{
            $SortRule[]=$Arg;
        }
    }
    foreach($array AS $Key=>$Info){
        foreach($KeyNameList as $KeyName){
            ${$KeyName}[$Key]=$Info[$KeyName];
        }
    }
    $EvalString=&#39;array_multisort(&#39;.join(",",$SortRule).&#39;,$array);&#39;;
    eval($EvalString);
    return $array;
}

The above is a tutorial on the default natural sorting of PHP two-dimensional array sorting. I hope it will be helpful to everyone.

Related recommendations:

PHP two-dimensional array assignment and traversal function implementation example

What is a PHP two-dimensional array? PHP II Detailed explanation of dimensional array examples

A PHP two-dimensional array sorting function sharing

The above is the detailed content of PHP two-dimensional array sorting—default natural sorting. For more information, please follow other related articles on the PHP Chinese website!