"awk '/[0-9]{4}/' file" not works, why ? Post: 302550482

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LEARN ABOUT PHP

sql_regcase

SQL_REGCASE(3)								 1							    SQL_REGCASE(3)

sql_regcase - Make regular expression for case insensitive match

SYNOPSIS

       string sql_regcase (string  $string)

DESCRIPTION

	Creates a regular expression for a case insensitive match.

       Warning

	      This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.

PARAMETERS

	      o $string
		- The input string.

RETURN VALUES

	Returns a valid regular expression which will match $string, ignoring case. This expression is $string with each alphabetic character con-
       verted to a bracket expression; this bracket expression contains that character's uppercase and lowercase  form.  Other	characters  remain
       unchanged.

EXAMPLES

       Example #1

	      sql_regcase(3) example

	      <?php
	      echo sql_regcase("Foo - bar.");
	      ?>

	      The above example will output:

	      [Ff][Oo][Oo] - [Bb][Aa][Rr].

	This can be used to achieve case insensitive pattern matching in products which support only case sensitive regular expressions.

NOTES

       Note

	      As  of PHP 5.3.0, the regex extension is deprecated in favor of the PCRE extension. Calling this function will issue an E_DEPRECATED
	      notice. See the list of differences for help on converting to PCRE.

PHP Documentation Group 													    SQL_REGCASE(3)

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Discussion started by: Lokesha

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Discussion started by: mercury

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