string handling

string replace

some useful functions to replace strings in strings

full source of string replace [ line 1 - 34 ] | download string replace

1	<?php
2	// Multiple string replace
3	// expects an array with $string => $replacement
4	$old_string = 'file_example.txt<br>another_file.txt<br>phpexample.php<br>';
5	$replacements = array('_'=>' ','<br>'=>' ,','.txt'=>' (Text)','.php'=>' (PHP)');
6	$new_string = strtr($old_string,$replacements);
7	echo $new_string;
8	echo '<hr>';
9	// Number Padding, PHP
10	// Doesn't have to be zeros or numberic but handy for making sure you keep leading zeros on
11	// day and month values when receiving such values as POST or GET variables.
12	$no_a = 3;
13	$no_a = str_pad($no_a, 2, '0', STR_PAD_LEFT);
14	echo $no_a;
15	echo '<hr>';
16	// String replacing, PHP
17	$old_string = 'the qick brown fox jumped over the lazy dog.';
18	$new_string = str_replace('qick brown fox', 'slow black bear', $old_string);
19	echo $new_string;
20	echo '<hr>';
21	// Remove tags using preg_replace, PHP
22	// This should remove anything and everything everything between
23	// 'less than' and 'greater than' characters
24	$source_string = '<b>bold</b> <a href="blank.php">link</a>';
25	$replacement = '(tag removed)';
26	$replaced_string = preg_replace('[<.*?.>]', $replacement, $source_string);
27	echo $replaced_string;
28	echo '<hr>';
29	// preg_replace can be used with arrays as well
30	$string = "The quick brown fox jumped over the lazy dog.";
31	$patterns = array('/quick/','/brown/','/fox/');
32	$replacements = array('slow','black','bear');
33	echo preg_replace($patterns, $replacements, $string);
34	?>

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