PHP - At A Loss: Strstr

Code: [Select]
$pdf->Write(5, "Title {$inv['cTitle']}, {strstr($inv['cTitle'], ':', true);}");
Code gives an error... How can I use this function correctly {strstr($inv['cTitle'], ':', true);

example:
cTitle = Robert 20078956 : HOT TEA 
strstr(cTitle) = Robert 20078956
I want to get before colon (

I've been using php's strstr() function to find data before an @ character in a string. Work fine for my local ide. I just uploaded all my files to a host to start debugging emails and it came to my attention that my hosting environment is running version 5.2.9 and strstr() isn't fully supported.

Heres a bit of code from the manual to show i'm talking about

Code: [Select]
<?php
$email  = 'name@example.com';
$domain = strstr($email, '@');
echo $domain; // prints @example.com

$user = strstr($email, '@', true); // As of PHP 5.3.0 <-- 
echo $user; // prints name
?>


I can't use the third argument apparently. Is there another way to go about doing this?

This was to match two letters together, 1 was from a post / form,another from a array.

it working this way but in_array wouldnt work ...

Please can you give an example of in_array, matching a posted letter and a array letter cheers.



Code: [Select]
<?php

if(isset($_POST['submit'])){

$quostionb=array("a");

$quostiona=$_POST['quostiona'];


    if(strstr($quostiona,implode($quostionb," "))){
        
      echo"<p> ansaw is: ".implode($quostionb," ")." ";
    }else die();
     }
?>


<form method="POST" action=" ">

<select name="quostiona">

<option value="a">a</option>
<option value="b">b</option>
</select>

<input type="submit" name="submit" value="send">

</form>