Php trim string at a particular character

Question

Hi, is there a php string function to trim a string after a particular character. I had a look on the php.net site and did a google search but couldn't find anything. The only solution i could think of was explode and then grab the first part of the array but thats not the most elegant solution.

For example

$sting = "/gallery/image?a=b";
$string = imaginary_function($string,'?');
echo $string; //echoes "/gallery/image"

Does anyone know of a good cheat sheet for php string manipulation functions? Thanks

Answer 1

Maybe something like this:

<? $string = substr($string, 0, strpos($string, '?')); ?>

Note that this isn't very robust (i.e. no error checking, etc), but it might help you solve your problem.

Answer 2

//you could use explode:
$string = "/gallery/image?a=b";
list($url,$querystring) = explode('?', $string, 2);

Answer 3

function imaginary_function($string, $char) {
  $index = strpos($char, $needle);
  if ($index === false) { return $string };

  return substr($string, 0, $index);
}

An excellent, official list of string manipulation functions is available here.

Answer 4

The strstr and stristr functions finds the first occurrence in a string and returns everything after it (including the search string). But it you supply true as the third argument, it brings back everything in front of the search string.

$string = strstr( $string, '?', true); # Returns /gallery/image

If the match is not found it returns FALSE so you could write an error check like this:

if( $path = strstr( $string, '?', true) ){
   # Do something
}

Answer 5

Try strtok:

$token = strtok($str, '?');

Note that the second parameter is a list of separators and not a separator string.

Answer 6

This may be overkill for what you are trying to do, but if you want to break apart a URL into pieces, try the PHP function parse_url. Here's the PHP manual page.

You'd then want the "path" portion of the resulting array.