usort

Sort an array: the Usort () function uses a user-defined function to sort the array, with the instance code as follows: function cmp ($a, $b)//user-defined callback function {if ($a = = $b)//If two parameters are equal {return 0;//return 0} return ($

Sort an array: the Usort () function uses a user-defined function to sort the array, with the instance code as follows: function cmp ($a, $b)//user-defined callback function {if ($a = = $b)//If two parameters are equal {return 0;//return 0} return ($

Sort an array: the Usort () function uses a user-defined function to sort the array, with the instance code as follows: function cmp ($a, $b)//user-defined callback function {if ($a = = $b)//If two parameters are equal {return 0;//return 0} return ($

Sort an array: the Usort () function uses a user-defined function to sort the array, with the instance code as follows: function cmp ($a, $b)//user-defined callback function {if ($a = = $b)//If two parameters are equal {return 0;//return 0} return ($

In PHP, the usort solves the problem of changing the original position at the same time. After PHP4.1.0, the original position of usort may change when the compare value is the same. this is the case in the document: Iftwomemberscompareasequal,

Use the PHP function usort () to implement custom sorting. There are many ways to sort arrays in, including sorting by value, by keyword, and by natural language. Today, we want to teach you how to use the PHP function usort () to sort arrays in

Is there a performance difference between array_multisort and usort functions used to process two-dimensional array or multi-dimensional array sorting? Is there a performance difference between array_multisort and usort functions used to process two-

Are there any performance differences between the two functions that handle two-dimensional arrays or multidimensional array sorting, using Array_multisort and Usort respectively? Reply content: Are there any performance differences between the

From:http://www.php100.com/cover/php/2395.htmlUsort(PHP 4, PHP 5)usort- using a user-defined comparison function to sort values in an arrayDescriptionBOOL usort ( array & $array , callback $cmp _function ) This function will use a user-defined

From PHP 4.1.0, the original position may change when the value of the usort is compared, as in the document: If Compare as equal, their order in the sorted array is undefined. That is, if the 2 values of the comparison are the same, their order in

After PHP4.1.0, the original position of usort may change when the compare values are the same. if the two compare values are the same, their order in the sorting results will be random. If you need to keep the original position of the same value,

After PHP4.1.0, the original position of usort may change when the compare values are the same. if the two compare values are the same, their order in the sorting results will be random. If you need to keep the original position of the same value,

Recently learned to encounter a custom array sort function usort () Some do not understand, search a lot of places are not very good explanation, their research for a long time, hair and I like the same beginners share ~BOOL usort ( array &$array ,

After PHP 4.1.0 and later versions, the original position of usort may change when the compare values are the same. This is what is said in the document:If two members compare as equal, their order in the sorted array is undefined.That is to say, if

Php array sorting usort, uksort and sort function usage, usortuksort. Php array sorting usort, uksort, and sort functions. usortuksort this article describes the usage of php array sorting usort, uksort, and sort functions. Share it with you for

After PHP 4.1.0 and later versions, the original position of usort may change when the compare values are the same. This is what is said in the document: If two members compare as equal, their order in the sorted array is undefined. That is to say,

There are many ways to sort arrays in, including sorting by value, sorting by keywords, natural language sorting, and so on. What we're going to teach you today is to implement a custom array ordering using PHP function Usort (). You can create your

Php_i love u (1) php Food and clothing parents: Use the Usort () function to sort two-dimensional arraysThe PHP language uses the Usort () function to sort two-dimensional arrays:[][]== a[][1]= length; A[][2] = views Hits$AAlong = 10; Variable

After 4.1.0 from PHP, the original location may change as the value of the usort is compared, as the document says: If two members compare as equal, their order in the sorted array is undefined. That is, if the 2 values of the comparison are the

There are many ways to sort arrays in, including sorting by value, by keyword, and by natural language. What we want to teach you today is to use the PHP function usort () to sort custom arrays. You can create your own comparison function and pass