Unix and Linux Discussions Tagged with subject |
|
Thread / Thread Starter |
Last Post |
Replies |
Views |
Forum |
|
|
|
20 |
17,456 |
What is on Your Mind? |
|
|
|
3 |
17,146 |
Shell Programming and Scripting |
|
|
|
1 |
3,760 |
Shell Programming and Scripting |
|
|
|
0 |
4,811 |
UNIX for Dummies Questions & Answers |
|
|
|
0 |
1,369 |
Security Advisories (RSS) |
|
|
|
0 |
974 |
Security Advisories (RSS) |
|
|
|
0 |
1,076 |
Security Advisories (RSS) |
|
|
|
0 |
767 |
Security Advisories (RSS) |
|
|
|
0 |
894 |
Security Advisories (RSS) |
|
|
|
0 |
979 |
Security Advisories (RSS) |
|
|
|
0 |
777 |
Security Advisories (RSS) |
|
|
|
0 |
1,118 |
Security Advisories (RSS) |
|
|
|
0 |
1,116 |
Security Advisories (RSS) |
|
|
|
0 |
918 |
Security Advisories (RSS) |
|
|
|
0 |
973 |
Security Advisories (RSS) |
|
|
|
0 |
1,301 |
Security Advisories (RSS) |
|
|
|
0 |
839 |
Security Advisories (RSS) |
|
|
|
0 |
991 |
Security Advisories (RSS) |
|
|
|
0 |
1,074 |
Security Advisories (RSS) |
|
|
|
3 |
9,767 |
Gentoo |
|
|
|
0 |
884 |
Security Advisories (RSS) |
|
|
|
0 |
1,095 |
Security Advisories (RSS) |
|
|
|
1 |
3,896 |
Linux |
|
|
|
14 |
5,373 |
UNIX for Dummies Questions & Answers |
|
|
|
3 |
114,391 |
UNIX for Dummies Questions & Answers |
|
|
|
7 |
9,939 |
UNIX for Dummies Questions & Answers |
|
|
|
4 |
6,183 |
UNIX for Dummies Questions & Answers |
|
|
|
3 |
2,747 |
UNIX for Dummies Questions & Answers |
|
|
|
7 |
9,338 |
UNIX for Dummies Questions & Answers |
|
|
|
2 |
23,418 |
Shell Programming and Scripting |
|
|
|
8 |
8,661 |
UNIX for Dummies Questions & Answers |
|
|
|
1 |
5,548 |
UNIX for Advanced & Expert Users |
|
|
|
4 |
230,986 |
UNIX for Advanced & Expert Users |
|
|
|
3 |
2,320 |
UNIX for Dummies Questions & Answers |
|
|
|
4 |
3,200 |
UNIX for Dummies Questions & Answers |
|
|
|
2 |
28,718 |
Programming |
|
|
|
3 |
7,167 |
UNIX for Dummies Questions & Answers |
|
|
|
7 |
4,711 |
Post Here to Contact Site Administrators and Moderators |
|
|
|
2 |
12,281 |
UNIX for Dummies Questions & Answers |
|
|
|
3 |
4,865 |
UNIX for Dummies Questions & Answers |
PREG_FILTER(3) 1 PREG_FILTER(3)
preg_filter - Perform a regular expression search and replace
SYNOPSIS
mixed preg_filter (mixed $pattern, mixed $replacement, mixed $subject, [int $limit = -1], [int &$count])
DESCRIPTION
preg_filter(3) is identical to preg_replace(3) except it only returns the (possibly transformed) subjects where there was a match. For
details about how this function works, read the preg_replace(3) documentation.
RETURN VALUES
Returns an array if the $subject parameter is an array, or a string otherwise.
If no matches are found or an error occurred, an empty array is returned when $subject is an array or NULL otherwise.
EXAMPLES
Example #1
Example comparing preg_filter(3) with preg_replace(3)
<?php
$subject = array('1', 'a', '2', 'b', '3', 'A', 'B', '4');
$pattern = array('/d/', '/[a-z]/', '/[1a]/');
$replace = array('A:$0', 'B:$0', 'C:$0');
echo "preg_filter returns
";
print_r(preg_filter($pattern, $replace, $subject));
echo "preg_replace returns
";
print_r(preg_replace($pattern, $replace, $subject));
?>
The above example will output:
preg_filter returns
Array
(
[0] => A:C:1
[1] => B:C:a
[2] => A:2
[3] => B:b
[4] => A:3
[7] => A:4
)
preg_replace returns
Array
(
[0] => A:C:1
[1] => B:C:a
[2] => A:2
[3] => B:b
[4] => A:3
[5] => A
[6] => B
[7] => A:4
)
SEE ALSO
PCRE Patterns, preg_quote(3), preg_replace(3), preg_replace_callback(3), preg_grep(3), preg_last_error(3).
PHP Documentation Group PREG_FILTER(3)