How to replace all array values with one character in PHP?

Question

If I have this array: $array = ['1', '2', '3'];

I would like to replace all values in that array with asterisk sign *. Essentially, I want to get array like this: $new = ['*', '*', '*'];.

What is the best way to do this ? I am hoping that there is some short simple solution for this.

Thanks in advance.

Seems a bit pointless to me, but array_walk($array, function(&$value) { $value = '*'; }); — Mark Baker
– Mark Baker, Commented Jan 2, 2016 at 14:08
But why not simply create an array of the same size using $new = array_fill(0, count($array), '*'); — Mark Baker
– Mark Baker, Commented Jan 2, 2016 at 14:09
@devlincarnate - Objects are pass by "pointer"; but scalars are always "pass by value", unless you specifically indicate "pass by reference" using & as described in the PHP Docs — Mark Baker
– Mark Baker, Commented Jan 2, 2016 at 14:22

jewelhuq · Accepted Answer · 2016-01-02 14:12:29Z

1

<?php
$array = ['1', '2', '3'];
$newarray = array_map(function($val) { return "*"; }, $array);
?>

answered Jan 2, 2016 at 14:12

jewelhuq

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1 Comment

Still seems overkill compared to the array_fill(0, count($array), '*'); solution ;-)