Hello folks! welcome back to a new section of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP array_filter() Function.
The built-in array_filter() function in PHP iterates over each value in the input array and passing them to the callback function.
The built-in array_filter() function in PHP iterates over each value in the input array and passing them to the callback function.
Syntax
Following below is the syntax to use this function -
array array_filter ( array $input [, callback $callback] );
Parameter Details
Sr.No | Parameter & Description |
---|---|
1 | input The array to iterate over |
2 | callback This a callback function to use |
Return Value
It returns the filtered array.
Example
Try out the below example -
<?php function odd($var) { return($var & 1); } function even($var) { return(!($var & 1)); } $input1 = array("a"=>1, "b"=>2, "c"=>3, "d"=>4, "e"=>5); $input2 = array(6, 7, 8, 9, 10, 11, 12); echo "Odd Values:\n"; print_r(array_filter($input1, "odd")); echo "Even Values:\n"; print_r(array_filter($input2, "even")); ?>
Output
When the above code is executed, it will produce the following result -
Odd Values: Array ( [a] => 1 [c] => 3 [e] => 5 ) Even Values: Array ( [0] => 6 [2] => 8 [4] => 10 [6] => 12 )
Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP array_flip() Function.
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Thanks for reading and bye for now.