Method for key-value pair similar to explode in php?

arrays, dictionary, php

Solution

PHP has an inbuilt function for it: `parse_str()`

<?php
$str = "first=value&arr[]=foo+bar&arr[]=baz";
parse_str($str);
echo $first;  // value
echo $arr[0]; // foo bar
echo $arr[1]; // baz

parse_str($str, $output);
echo $output['first'];  // value
echo $output['arr'][0]; // foo bar
echo $output['arr'][1]; // baz

?>

Note: My recommendation is to not use the first form (`parse_str($str)`) for the same reason `register_globals` is bad. The second form (`parse_str($str, $arr)`) is always preferred.

Problem

Is there an already existing function in PHP for creating an associative array from a delimited string? If not, what would be the most effective means of doing so? I am looking at PayPal's new NVP API, where requests and responses have the following format: ``` method=blah&name=joe&id=joeuser&age=33&stuff=junk ``` I can use `explode()` to get each pair into an array value, but it would be even better if I could do some sort of function like `dictionary_explode` and indicate the key-value delimiter and get back an associate array like: ``` Array { [method] => blah [name] => joe [id] => joeuser [age] => 33 [stuff] => junk ``` } My CS friends tell me that this idea exists in other languages like Python, so I'm wondering if I just haven't found such a thing for PHP. Right now I'm looking at doing an array_walk, but I'd prefer something more pre-built.

Original source