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PHP - Function preg_replace()
Syntax
mixed preg_replace (mixed pattern, mixed replacement, mixed string [, int limit [, int &$count]] );
Definition and Usage
The preg_replace() function operates just like POSIX function ereg_replace(), except that regular expressions can be used in the pattern and replacement input parameters.
The optional input parameter limit specifies how many matches should take place.
If the optional parameter $count is passed then this variable will be filled with the number of replacements done.
Return Value
After the replacement has occurred, the modified string will be returned.
If no matches are found, the string will remain unchanged.
Example
Following is the piece of code, copy and paste this code into a file and verify the result.
<?php $copy_date = "Copyright 1999"; $copy_date = preg_replace("([0-9]+)", "2000", $copy_date); print $copy_date; ?>
This will produce the following result −
Copyright 2000
php_regular_expression.htm
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