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Differences from POSIX regex
Introduction
PCRE Patterns
PHP Manual
Pattern Syntax
Table of Contents
Introduction
Delimiters
Meta-characters
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Unicode character properties
Circumflex and dollar
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Vertical bar
Internal option setting
Subpatterns
Repetition
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Once-only subpatterns
Conditional subpatterns
Comments
Recursive patterns
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Differences from POSIX regex
Introduction
PCRE Patterns
PHP Manual
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