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Request #43824 Suggestion for new "substring exists" function
Submitted: 2008-01-12 00:31 UTC Modified: 2008-01-12 00:57 UTC
From: anon at example dot com Assigned:
Status: Closed Package: Feature/Change Request
PHP Version: 5.2.5 OS:
Private report: No CVE-ID: None
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From: anon at example dot com
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 [2008-01-12 00:31 UTC] anon at example dot com
What we often need to test for is just whether a substring exists or not. This is very common, for example, in examining a user agent.

Currently you have to test for these specific formulations, being very careful to use the strict equivalency operators:

	strpos === FALSE


	strpos !== FALSE

It would be handy and much less prone to incorrect syntax use to have a "string exists" function -- maybe as strex or strpres ("string present") -- dedicated to this, which returns only TRUE or FALSE.

There could also be a "case sensitive string exists" -- maybe as striex or stripres.


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 [2008-01-12 00:47 UTC] anon at example dot com
In case my initial description is confusing, I mean...

Currently you can use strpos, but you have to be careful to test only with two specific formulations, using the strict equivalency operators: 

	if (strpos($x, $y) === FALSE)


	if (strpos($x, $y) !== FALSE)

Otherwise you will have ambiguity with a substring position of number 0.
 [2008-01-12 00:57 UTC] anon at example dot com
Closing this and replacing with new coherent bug.
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