Dumb question fo the day. String searching.

Kudose

Hey all. Dumb question time. Cant find the function in the manuel dealing with returning all characters BEFORE the last occurance of a set character.

i.e. This is a test string.

I want to return everything BEFORE the final space. Removing the space as well. I can remove the space and all of that, but I just need to know the function name to do what I am trying to do.

Thanks!

akillez

// Reverse search of strrchr.
function strrrchr($haystack,$needle) {
// Returns everything before $needle (inclusive).
return substr($haystack,0,strpos($haystack,$needle)+1);

}

Kudose

using your code like this:

function strrrchr($haystack,$needle) { 
return substr($haystack,0,strpos($haystack,$needle)+1); 
} 
$title = "Hello world.  How are you?";
strrrchr($title, " ");

It still strips everything after the first space.

yelvington

http://us2.php.net/strpos returns the index of the first occurence.

http://us2.php.net/strrpos returns the index of the last occurrence.

Kudose

Thanks for your input yelvington, but that isn't what I was looking for.

Maybe what I am looking for doesn't exist and would would have to use the long route. (using two functions instead of one)

yelvington

Think again. Use akillez' code, but replace strpos with strrpos. It will then return a substring consisting of all characters up to and including the last occurrence of the target character.

If you want to return all characters up to but not including the last occurrence of the target character, take out the '+1'.


<?
function strrrchr($haystack,$needle) {
return substr($haystack,0,strrpos($haystack,$needle));
}
$title = "Hello world.  How are you?";
echo strrrchr($title, ' ');

?>