Problem Array Item Problem, Cannot work with each item in array

Hello,

I have been working for this basic function for 4-5 hours. I have changed it using differnet functions but it is not working.

What i try to do is to collect some datas from a form, and output the data
that are consisting of only only letters.

Problem is the function i have written is working properly if i do the regexp checking in each array myself, but it is not in working properly, only checks the latest item in foreach, the others not.

Please let me know where i am doing the mistake or gonna eat the nuts.

What i am doing is :
1) split all items that comes from textbox by newline
2) in a loop , i check each data if it has only a-z letters in it. (the regexp i iplemented working properly alread when i check myself any string)

<form action='index.php' method='POST'> 
<textarea name="FILTER" cols=10 rows=10></textarea> 

<input type='hidden' name='action' value='validate'> 
<p> 
<input type='submit' value='Submit'> 
</form> 
<?php 

$str= $_REQUEST['FILTER'];
$FILTER = explode("\n", $str);

//echo "WRITING THE ALL DATA WITHOUT FILTERING : <br>";
//echo "KeyID | Value<br>";

foreach($FILTER as $key => $value) {
//	echo $key . ":" . $value . "<br>";
	if (eregi('^[a-zA-Z]+$', $value)) { 
		echo 'FILTERED:'. " " .$value . "<br>";
	}	
}

?>

PHP:

 

do a var_dump($FILETER) before the foreach just to be sure the array is properly filled.

 

the array is properly filled. Because i can echo each lines without problem.

 

Can you post the var_dump output here?

 

Before exploding the string, assure that you have converted different new lines types to unix standard.

$str = preg_replace('/\r\n|\r/', "\n", $str);
$FILTER = explode("\n", $str);

Code (php):