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Regular Expression function library: Sql_regcase

Source: Internet
Author: User
Keywords PHP Chinese function Handbook sql_regcase regular expression function library
Tags aliyun expression function function library html http php php chinese function handbook
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Sql_regcase

(PHP3, PHP4)

Sql_regcase---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Make regular Expressions case-insensitive

Syntax: String sql_regcase (String string)

Description:

Returns a valid regular expression, which ignores case. This expression converts individual characters into brackets ([]) to indicate that if the character is available, the bracket will contain the uppercase and lowercase characters, or it will contain the original string two times.

Example:

<?php

Echo sql_regcase ("Foo bar");

?>

Show:

[Ff] [Oo] [Oo] [][BB][AA][RR]

This can be used to achieve pattern alignment that is case-insensitive, which is only possible in a formal case of case-sensitive representation.

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Related Keywords:
regular expression _ t sql regular expression gnu regular expression find regular expression shell regular expression regular expression matching regular expression for characters
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