Php net regular expressions modifiers
Pattern ModifiersThe current possible PCRE modifiers are listed below. The names in parentheses refer to internal PCRE names for these modifiers. Spaces and newlines are ignored in modifiers, other characters cause error. Show i ( hfuecks at nospam dot org ¶ 17 years ago
"++Invalid UTF-8 in pattern\n"; Anonymous ¶ 3 years ago
varrah NO_GARBAGE_OR_SPAM AT mail DOT ru ¶ 16 years ago
phpman at crustynet dot org dot uk ¶ 11 years ago
arash dot dalir at gmail dot com ¶ 5 years ago
('/(?J)(? Daniel Klein ¶ 10 years ago
Hayley Watson ¶ 2 years ago
michal dot kocarek at brainbox dot cz ¶ 13 years ago
Wirek ¶ 4 years ago
?> Wirek ¶ 4 years ago
?> ebarnard at marathonmultimedia dot com ¶ 15 years ago
What are modifiers in regular expression?Regular expression patterns are often used with modifiers (also called flags) that redefine regex behavior. Regex modifiers can be regular (e.g. /abc/i ) and inline (or embedded) (e.g. (? i)abc ). The most common modifiers are global, case-insensitive, multiline and dotall modifiers.
Does PHP use PCRE?Installation ¶
The PCRE extension is a core PHP extension, so it is always enabled. By default, this extension is compiled using the bundled PCRE library.
What is PCRE PHP?The PCRE library is a set of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5, with just a few differences (see below). The current implementation corresponds to Perl 5.005. +add a note.
Does PHP support regex?In PHP, regular expressions are strings composed of delimiters, a pattern and optional modifiers. $exp = "/w3schools/i"; In the example above, / is the delimiter, w3schools is the pattern that is being searched for, and i is a modifier that makes the search case-insensitive.
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