String Functions?

[Napster]

I am trying to find out if there are two strings in PHP, one that will delelete everything in a string after so many characters that you define yourself. Here is an example if your are lost

$var = "Hello World";
$var = function($var, 5);
echo $var;

and $var would output "Hello". I am also looking for a function that check to see if there is a certain character or characters in a string.

I have already looked at PHP.net and I could not find anything. Any helps is appreciated.

[laserlight]

Use [man]substr/man
It doesnt delete characters in a string, but extracts a substring, i.e. part of the original string.

For functions to check for characters, you can use [man]strstr/man, [man]strpos/man, [man]substr_count/man etc depending on what exactly you need.

Conversely, regular expressions can be used if you have more complex requirements.