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Php: preg replace one question mark?

How to replace one question mark with preg.

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preg_replace('/\?/', 'replacement', $original, 1)


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If it's one character you're replacing, you may not need the preg_ solution: a "simple" str_replace might do the trick as well:



www.php.net/str_replace

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If you wanted not to replace the question mark in the string testing ??

, you could do:

// using negative lookbehind/ahead to ensure that the question mark 
// doesn't have a "friend"
$new = preg_replace('/(?<!\?)\?(?!\?)/', 'replacement', $original);

If you only want to replace the first question mark in the line - chaos request is what you want

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