How would I check if a string has a word in, and add it on if it doesn't exist?

[TeddyKiller]

Lets take a string..

$string = 'hello';

How would I check if that string, as the word "Re: " in it.

If it doesn't, to add it on. So the output would be in this case

Re: hello

 

If we took this string..

$string = 'Re: hello';

Checked if it has Re: in it.

It does have Re, in it.. so there for we don't add it on. Output would be..

Re: hello

 

How can I do this?

Thanks

[TeddyKiller]

I've tried this..

$subject = $row['subject'];
  $pos = stripos('Re: ',$subject);
  if($pos !== false){ $subject = $subject; } else { $subject = 'Re: '.$subject; }

Though it continues to add in Re:

[litebearer]

Hmmm...

 

<?php

$haystack = "Subject";
$needle = "Re:";

$pos = strpos($haystack,$needle);

if($pos === false) {
// string needle NOT found in haystack
echo "Not found: " . $needle . " in " . $haystack;
}
else {
// string needle found in haystack
echo "Not found: " . $needle . " in " . $haystack;
}
echo "<br><br>";


$row['subject'] = "Re: Something";


$haystack = $row['subject'];
$needle = "Re:";

$pos = strpos($haystack,$needle);

if($pos === false) {
// string needle NOT found in haystack
echo "Not found: " . $needle . " in " . $haystack;
}
else {
// string needle found in haystack
echo "found: " . $needle . " in " . $haystack;
}
echo "<br><br>";

?>

[TeddyKiller]

Ah cheers, can you explain why it never worked for me in the first place?

[salathe]

Ah cheers, can you explain why it never worked for me in the first place?

 

This line: $pos = stripos('Re: ',$subject); was searching for the position of $row['subject'] in the string "Re: ".  In other words, your parameters were the wrong way around. See the stripos manual page.

[TeddyKiller]

Ah cheers, can you explain why it never worked for me in the first place?

 

This line: $pos = stripos('Re: ',$subject); was searching for the position of $row['subject'] in the string "Re: ".  In other words, your parameters were the wrong way around. See the stripos manual page.

 

Ah i understand. I thought having Re: infront of the string.. would look for the word infront, as if it was after it'd look if it was after the word. My mistake.