Detailed introduction to the uksort() function

Sort the array: usort() function uses a user-defined function to sort the array. The example code is as follows: function cmp($a, $b) //User-defined callback function { if($a==$b )                                                                                                                                                                                   

# Introduction: Sort array: usort() function uses user-defined function to sort array, example code As follows: function cmp($a, $b)        //User-defined callback function {   if($a ==$b)   &

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Introduction: PHP array sorting usort uksort sort function

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Introduction: PHP array sorting usort uksort sort function. PHP tutorial array sorting usort uksort sort function sorts the array usort() function uses a user-defined function to sort the array Sorting. */ function cmp($a, $b)//User-defined callback function { i

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##Introduction: PHP array sorting usort, uksort and sort function usage, usortuksort. PHP array sorting usort, uksort and sort function usage, usortuksort This article describes PHP arrays with examples The usage of sorting usort, uksort and sort functions is shared with everyone for your reference. The specific usage is divided into ##5. php array sorting usort uksort sort function

Introduction: PHP array sorting usort uksort sort function. PHP tutorial array sorting usort uksort sort function Sort an array The usort() function uses a user-defined function to sort an array. */ function cmp($a, $b)//User-defined callback function { i

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Introduction: ec(2); Array sorting In the PHP tutorial, there are three sorting methods, sorting by index, sorting by value (without retaining the original index), and sorting by value (retaining the original index). Each type is divided into three functions: ascending order, descending order and user-defined order. They are as follows: Sort by index: ① Ascending ksort() ② Descending krsort() ③ User-defined order uksort() Sorting without retaining the original index value: ① ascending sort() ② descending rsort() ③ user-defined order usort() Keep the original index

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