Problem with strpos function

PHP
1

I use the strpos function to see if I should send an email to the user or not. If the array POST contains a specific word in a form field and another string does not contain it, I should send an email, otherwise I should move on and do nothing:


$my_string = 'word';
$email = 'john@doe.com';
if ((strpos($_POST['field'],'word') !== FALSE || strpos($_POST['field'],'WORD') !== FALSE) &&
	(strpos($my_string,'word') === FALSE || strpos($my_string,'WORD') === FALSE)) {
	$subject = 'Email subject';
	$message = 'Email message';
	mail($email,$subject,$message);
}

In this particular case, $my_string contains ‘word’, therefore the email should not be sent, but it’s sent anyways. What am I doing wrong?

2

Doesn’t answer your question, but you might want to check out http://www.php.net/manual/en/function.stripos.php

3

stripos is case insensitive


$_POST['field'] =" string with a WORD in it";

if(stripos($_POST['field'],'word')){

echo 'send it';

}
else{

echo 'dont send it';

}

This works because stripos() returns the position of the match, which when tested in a boolean fashion returns true.

if() works by applying a test to see if something equates to true.

true is true so echo ‘send it’;

If not found then stripos returns false, false it not true so the if() failure evokes the else {}

4

I didn’t know that there was a function named stripos, I thought that there was only strpos :smiley:

5

Just one thing: writing only


if(stripos($_POST['field'],'word'))

didn’t work, I had to write


if(stripos($_POST['field'],'word') !== false)

to make it work. Just in case somebody needs to do the same thing :slight_smile: