09-13-2009
Quote:
Originally Posted by
know d unknown
i thought you were asking me if the code was wrong...coz it was next to my reply... am sorry i dint get wat u were trying to explain at tat point...
One pitfall of not quoting... but my comment was directed at OP and not at you. It is obvious he mistyped the command.... better to use copy/paste.
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LEARN ABOUT PHP
preg_filter
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)