Giorgio
Reputation: 1613
Regular expression - 1st random character equal to the 2nd one.
I'd like to have a regular expression in PHP like "/A.B./i" but the random character following A and the random character following B should be equal.
How can I solve this?
Upvotes: 2
Views: 131
Answers (1)
Milad Naseri
Reputation: 4118
This should work:
$regex = '/A(.)B\1/i';
The \1 referencing the captured group (.) is called a back-reference (as @Ilmari Karonen was kind enough to remind).
Upvotes: 6
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