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<?php $myString = "type:blue, type:red, shift:second, shift:first, category:circle, system:unknown"; $params = explode( ", ", $myString ); $possibleKeys = [ "category", "shift", "type", "chances" ]; $ignore = ['system']; $nodes = []; foreach ($params as $param) { $node = explode( ":", $param ); if (in_array( $node[0], $possibleKeys )) { $nodes[$node[0]][] = $node[1]; } else { $nodes[$node[0]] = $node[1]; } } foreach($ignore as $key) { unset($nodes[$key]); } print '<pre>'; print_r($nodes); print '</pre>'; ?>
Output for git.master, git.master_jit, rfc.property-hooks
<pre>Array ( [type] => Array ( [0] => blue [1] => red ) [shift] => Array ( [0] => second [1] => first ) [category] => Array ( [0] => circle ) ) </pre>

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