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include::../description.adoc[]
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== Noncompliant Code Example
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2022-02-04 17:28:24 +01:00
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[source,php]
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----
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/^a|b|c$/
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----
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== Compliant Solution
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2022-02-04 17:28:24 +01:00
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[source,php]
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2021-09-13 16:20:17 +02:00
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----
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/^(?:a|b|c)$/
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----
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or
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2022-02-04 17:28:24 +01:00
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[source,php]
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2021-09-13 16:20:17 +02:00
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----
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/^a$|^b$|^c$/
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----
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or, if you do want the anchors to only apply to ``++a++`` and ``++c++`` respectively:
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2022-02-04 17:28:24 +01:00
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[source,php]
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2021-09-13 16:20:17 +02:00
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----
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/(?:^a)|b|(?:c$)/
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----
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