An effective way to take the appropriate values from the string and add an associative array with the key which coincided from given string

Question

How can I get values from string and put it into an associative array, where the key must be given wildcard string.

Given template is:

param1/prefix-{wildcard1}/{wildcard2}/param2

Given string is:

param1/prefix-name/lastname/param2

The result must be

array('wildcard1' => 'name', 'wildcard2' => 'lastname');

UPD

I want to implement some route script, and wildcards must be variable names that will be injected to script and they will be loaded dynamically from other classes.

sounds like you're just trying to do some basic string splitting and parsing. Look here for a starting point http://php.net/manual/en/function.explode.php — Ananth Rao, Feb 25 '17 at 12:29
no. templates must be added dynamically, and I have no opportunity to know the wildcards names. Only thing is that they must be included in {} delimiters. I want to implement some route script, and wildcards must be variable names that will be injected to script — Mamikon Arakelyan, Feb 25 '17 at 12:42

score 0 · Accepted Answer · edited Dec 28 '19 at 07:29

I'd first transform template into regex with named capture group, then do the preg_match.

$template = 'param1/prefix-{wildcard1}/{wildcard2}/param2';
// escape special characters
$template = preg_quote($template, '/');

// first, change all {wildcardN} into (?<wildcardN.*?)
$regex = preg_replace('/\\\{([^}]+)\\\}/', "(?<$1>.*?)", $template);

$string = 'param1/prefix-name/lastname/param2';
// do the preg_match using the regex
preg_match("/$regex/", $string, $match);

print_r($match);

Output:

Array
(
    [0] => param1/prefix-name/lastname/param2
    [wildcard1] => name
    [1] => name
    [wildcard2] => lastname
    [2] => lastname
)

An effective way to take the appropriate values from the string and add an associative array with the key which coincided from given string

1 Answers1