Tag: usort

  • What is usort() function in php & how to use it ?

    What is usort() function in php & how to use it ?

    The usort() function sort an array by values using a user-defined comparison function. It accepts two parameters, the first parameter must be an array to sort and the second parameter must be a string that defines a function.┬áThe function must return an integer less than, equal to, or greater than zero if the first argument…