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@ 2023-09-09T13:12:42Z

<?php

$string = 'test test test test';

echo preg_replace("/\w+\K/", '*', $string);

Output
Performance
VLD
References
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preg_replace: documentation ( source)

preferences:dark modelive previewkey bindings

45.56 ms | 1101 KiB | 5 Q