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PHParadise > string handling > substring examples

some examples using substr(),
extracting the first, last, n chars of a string.
reverse a string or see how many times a char is used in a string.

copy the code of string handling / substring examples

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<?php

/*------------------------------------------------------------------------------
|
|                             PHParadise source code
|
|-------------------------------------------------------------------------------
|
| file:             substring examples
| category:         string handling
|
| last modified:    Mon, 20 Jun 2005 16:41:18 GMT
| downloaded:       Fri, 25 May 2012 03:12:49 GMT as copy from textarea
|
| code URL:
| http://phparadise.de/php-code/string-handling/substring-examples/
|
| description:
| some examples using substr(), extracting the first, last, n chars of a string.
| reverse a string or see how many times a char is used in a string.
|
------------------------------------------------------------------------------*/

echo '
<form method="post" action="./">
	<input type="text" name="word" />
	<input type="submit" value="see" />
</form>';

if(!empty($_POST['word']))
{
	$str = $_POST['word'];
	
	$char['original'] = $str;
	
	$char['words'] = explode(' ',$str);
	
	$char['word_count'] = count($char['words']);
	
	$char['first_char'] = substr($str,0,1);
	
	$char['last_char'] = substr($str,-1);
	
	$char['all_but_first_char'] = substr($str,1);
	
	$char['all_but_last_char'] = substr($str,0,-1);
	
	$char['char_repeat'] = array();
	
	for($x = 0; $x < strlen($str); $x++)
	{
		$char['chars'][] = substr($str,$x,1);
	
		if(!array_key_exists($str{$x},$char['char_repeat'])) $char['char_repeat'][$str{$x}] = 0;
	
		$char['char_repeat'][$str{$x}]++;
	}
	
	$char['char_count'] = strlen($str);
	
	ksort($char['char_repeat']);
	
	$char['reverse'] = join('',array_reverse($char['chars']));
	
	echo '<pre>';
	print_r($char);
	echo '</pre>';
}

PHParadise source code of “substring examples” in category “string handling”

PHParadise > string handling > substring examples

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