3v4l.org

run code in 300+ PHP versions simultaneously

sponsor
bughunt
search
recent
about

@ 2015-12-23T10:47:33Z

<?php
$number  =  1;
$answer = "p__v_";
$letter = mb_substr( $answer , 2, 1 );
$answer = preg_replace('/'.$letter.'/u', '_',$answer,1);
    
echo $answer;

Output
Performance
VLD
References
Branches

mb_substr: documentation ( source)
preg_replace: documentation ( source)

preferences:dark modelive preview

42.3 ms | 402 KiB | 5 Q