pcre multiline

PHP extension text processing -- PCRE regular expression syntax 3 -- escape sequence (backslash) backlash has multiple usage. First, if it is followed by a non-alphanumeric character, it indicates that the special meaning represented by this

PCRE There are two different ways to use regular expressions in PHP: PCRE (Perl compatible notation, preg_*) function and POSIX (POSIX extended notation, ereg_*) functions. Luckily, the POSIX family function was deprecated from the PHP 5.3.0.

Differences from Perl PCRE function PCRE Patterns PHP manual Schema Syntax (No version information available, might only being in SVN) Schema syntax-syntax explanation for Perl compatible regular expressions The PCRE library is a set of functions

PHP Regular expression notes, PHP regular expression notes What is a regular expression On the computer we often use (wildcards) to find the files we need, for example: *.doc here the * representative matches 0 or more characters. Regular

What is a regular expression On the computer we often use (wildcards) to find the files we need, for example: *.doc, where the * stands for matching 0 or more characters. Regular expressions are also tools used for text matching, except that they

There are two sets of regular expression libraries in PHP that are similar in functionality, but have slightly different execution efficiencies: A set is provided by the Pcre (Perl compatible Regular Expression) library. A function named after a

PHP regular expression note what is a regular expression On the computer, we often use (wildcard) to find the files we need, for example, *. doc. here * indicates matching zero or multiple characters. Regular expressions are also a tool for text

Regular Expressions (RegEx)--Quick referenceBasic knowledgeMatch anywhere: By default, regular expressions can match substrings anywhere in the searched string. For example, the regular expression ABC can match abc123, 123ABC, and 123abcxyz. To

Basic knowledge CharacterPOSIX Extended Regular Expression functionsPerl-compatible Regular expression functionsFrom the message verification. The format of the message: Tenssun@163.com Where Tenssun is the user name, 163.com is the server name

Anchor Outside of a character class, in the default match mode, ^ is an assertion that asserts that the current match is at the beginning of the target string. Inside a character class, ^ indicates that the character described in this character