removing last word

twopeak

Hellooww...

maybe a question that is a little bit easyer to answer:

I want to remove a known part of a string.
I have a string (SCRIPT_FILENAME) and I would like to remove what comes behind the last "/"

I could do this, by exploding on /
retrieve all the values except the last one
implode with /

but that's too long for me, what I would need would be a substr() with a negative end!

any ideas?
anything more than 2 lines is not welcome 🙂

Duey

here

<?
$string = "/www/htdocs/folder/subfolder";
$split = explode("/", $string);
$int = sizeof($split);
$int2 = "$int" - "1";
$string = "";
for($i=1; $i<$int2; $i++){
$string .= "/$split[$i]";
}

echo "$string";
?>

twopeak

that's too long 🙂

It's more a thinking exercise I've put myself to;
I thought of reversing the string, and use the negative start to start at the first /
and then re reverse the string
but when you write this down in 2 lines or less, it gets a horrible mess🙂

$string = "/files/dir/otherdir/file.php";
$scriptname = "file.php";
//Those two I got this with preset $_SERVER[]

$solution=strrev(substr(strrev($string),"-".$strlen($scriptname)));

something like this I thought of!

Duey

ahh so? it works and its hardly long
is this better?

<?
$string = "/www/htdocs/folder/subfolder";$split = explode("/", $string);$int = sizeof($split);$int2 = "$int" - "1";$string = "";for($i=1; $i<$int2; $i++){$string .= "/$split[$i]";}echo "$string<br>";
?>

intenz

Try this...

$string = '/home/www/smu/foo.php';
$newstring = substr( $string, 0, strrpos( $string, '/' ) );
echo $newstring;

philipolson

Just do:

<?php
$str = 'a/b/c/d/foo.php';
print basename($str); // foo.php
print dirname($str); // a/b/c/d
?>

http://www.php.net/basename
http://www.php.net/dirname

twopeak

hem...
I have to admin the best solution is the best one...
I finally worked out this:
reverse the string
take everything, starting from the first /
reverse that string

but those were still 3 lines 😉

is there a site somewhere with "php-breainteasers" or just programming brainteasers?