如何只查找一次查找字符串？

Question

For example there is a string :

$valeur = "a-b-c-b-d-e";

The letter "b" is present twice in this. I want to replace only the first "b".

How to do that ? I used str_replace but it replaces all occurences.

Answer 1

You cab try preg_replace here.

    $valeur = "a-b-c-b-d-e";
    echo preg_replace('/b/', 'x', $valeur, 1); // outputs 'a-x-c-b-d-e'

Here 4th parameter is for limit and this is optional.

thanks