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This function passes the entire child element even if it is not a string.If it is an array, as would be the case in multidimensional arrays, it will pass the whole child array as one parameter.Therefore, do something elegant like this: This does in 4 lines what other functions took 40 to 50 lines to do.This does not require you to create temporary arrays or anything.
To take this example set of data from the documentation: In this case, although the "10" remains associated with the first '1' after being sorted, the "2" and '3' are reversed from their original order.I think in this description of array_multisort the call by reference should be listed in the definition.Hope this helps someone There is a lack of precision for the second example : Example #2 Sorting multi-dimensional array The explanation is :"In this example, [...] The second will contain 1, 3, "2", 2, 1 (sorted as numbers, in descending order)., $array) ///____________________// array Column Sort() / I would like to report a kind of confusion that arose with the message Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of array_multisort().
If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file..a line like this:array_multisort (&$keyarr, &$arr );// sort against this keys This message is not easily switched off by changing the error reporting level because it's produced at parsinig time -- not execution time.
I think this message is misleading because the arguments are passed by reference ANYWAY in array_multisort.