[SOLVED] Problem with using preg_replace()

[steve m]

Hello,

 

I am having a problem trying to use the preg_replace() function.  I have a form and I want to remove "new line(\n)", tabs(\t), carriage returns(\r) etc.. from the data being submitted, but it doesn't seem to work.

<?php
$str = preg_replace("/\n/", '' ", $_POST[email]);

echo $str;

?>

It doesn't seem to do anything.  For example, if the email field is submitted with test@test.com\n and I print $str, it prints test@test.com\\n.

 

Can someone please tell me what I am doing wrong?

[VirusDoctor]

Hi, try this code:

 

<?php
$str = preg_replace("/\n/", '' ", $_POST['email']);

echo $str;

?>

[rajivgonsalves]

your code should be

 

 

<?php

$str = preg_replace("/[\t\n\r]/g", "", $_POST['email']);

 

echo $str;

 

?>

[steve m]

Hi rajivgonsalves,

 

I tried that and it still doesn't remove the \n, \t, or \r.  Am I not ecaping those characters right?

[effigy]

If you run a proper test you can see that it works:

 

<pre>
<?php
$data = "test@test.com\n";
echo '-', preg_replace("/\n/", '', $data), '-';
?>
</pre>

 

It appears you might be suffering from magic quotes.

[steve m]

Hi effigy,

 

I think magic quotes are on.  So do do I need to run the POST variable through stripslashes() first?

[kjtocool]

That, or, turn off magic quotes.

[steve m]

I tried the stripslashes() before the preg_replace() and it still won't remove the \n.