Example # Using backreferences followed by numeric literals
<?php
$string = 'April 15, 2003';$pattern = '/(\w+) (\d+), (\d+)/i';
$replacement = '${1}1,$3';
echo preg_replace($pattern, $replacement, $string);?>
The above example will output:
April1,200
Example # Using indexed arrays with preg_replace()
<?php
$string = 'The quick brown fox jumped over the lazy dog.';
$patterns = array();
$patterns[0] = '/quick/';
$patterns[1] = '/brown/';
$patterns[2] = '/fox/';
$replacements = array();
$replacements[2] = 'bear';
$replacements[1] = 'black';
$replacements[0] = 'slow';
echo preg_replace($patterns, $replacements, $string);?>
The above example will output:
The bear black slow jumped over the lazy dog.
Example # Strip whitespace
This example strips excess whitespace from a string.
<?php
$str = 'foo o';$str = preg_replace('/\s\s+/', ' ', $str);// This will be 'foo o' nowecho $str;?>
Example # Using the
count
parameter<?php
$count = 0;
echo preg_replace(array('/\d/', '/\s/'), '*', 'xp 4 to', -1 , $count);
echo $count; //3?>
The above example will output:
xp***to 3
If you would like to remove a tag along with the text inside it then use the following code.
<?php
preg_replace('/(<tag>.+?)+(<\/tag>)/i', '', $string); ?>
example
<?php $string='<span class="normalprice">55 PKR</span>'; ?>
<?php
$string = preg_replace('/(<span class="normalprice">.+?)+(<\/span>)/i', '', $string); ?>
This will results a null or empty string.
<?php
$string='My String <span class="normalprice">55 PKR</span>';
$string = preg_replace('/(<span class="normalprice">.+?)+(<\/span>)/i', '', $string); ?>
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