PHP forward slash match

Question

How I can check if some string contains forward slash in PHP?

Chandler R Reeves · Accepted Answer · 2012-08-05 14:03:18Z

10

Check for occurences with strpos()

if (strpos($string, '/') !== FALSE) // Found

Returns the position as an integer. If needle is not found, strpos() will return boolean FALSE.

This is faster than a regular expression, and most other methods, because it stops checking at the first occurrence.

edited Aug 5, 2012 at 14:03

Chandler R Reeves

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answered May 31, 2011 at 6:27

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akond · Accepted Answer · 2011-05-31 06:27:09Z

4

It is very simple:

preg_match ('~/~', $string);

answered May 31, 2011 at 6:27

akond

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2 Comments

Phil Over a year ago

From the manual: Do not use preg_match() if you only want to check if one string is contained in another string. Use strpos() or strstr() instead as they will be faster.

Jakob Egger Over a year ago

Using preg_match has the advantage of being easier to understand than the weird strpos!==false code. As long as your critical path doesn't include checking a million strings whether they contain a string, I'm pretty sure preg_match is fine. It's also easier to refactor if eg. you decide you only want to match trailing slashes...

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