loss of variable?

Hi, I can read successfully test my xml and a text files separately, but I'm coming into a problem where the variable is possibly being removed or deleted by the time I want to plug it into the bottom of the document.

As you can see in the top part of the code "$xmlname" is set to the product name specified in the xml document. In the bottom of the document where I use strpos, and attempt to see if the variable $xmlname is equal to a line in the text document, I can't get it to return true unless I statically put a word in, instead of the variable. Any ideas?

<?php

$xmlFileData = file_get_contents('datafeed1.xml');
//SimpleXML parser
$xmlData = new SimpleXMLElement($xmlFileData);

//Retrieving the product name
$xmlname = $xmlData->transactions[0]->transaction[0]->transaction_details[0]->transaction_detail[0]->product_name;
//Printing first product name
print($xmlname);

print(' - ');
//Retrieving the product price
$xmlprice = $xmlData->transactions[0]->transaction[0]->transaction_details[0]->transaction_detail[0]->product_price;
//Printing first product price
print($xmlprice);
print "<br /><br />";

$lines = file('file.txt');

// Loop through array
foreach ($lines as $line_num => $line) {
    echo "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br />\n";
}

$string1 = $xmlname;
$file = file_get_contents('file.txt');
if(strpos($file, $string1) !== FALSE)
echo 'The file contains the string';
else
echo 'The string is not within the file.'; 

?>

PHP:

 

change:
if(strpos($file, $string1) !== FALSE)
echo 'The file contains the string';
else
echo 'The string is not within the file.';


to:

if (strpos($file, $string1) === false) {
echo 'The string is not within the files.';
} else {
echo 'the file contains the string';
}

 

thanks! it works now