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<?php function parseDbString(string $value = 'Looking for a good {{ $pippo }}'){ global $pippo; $pippo = 'Pizza'; return preg_replace_callback('/{{ \$(.*?) }}/', function($m) use ($pippo) { echo "Global: " , $GLOBALS['pippo']; echo "\n{$m[1]}\n"; return $GLOBALS[$m[1]] ?? $m[0]; // null coalescing operator provides fallback },$value); } echo parseDbString();
Output for git.master, git.master_jit, rfc.property-hooks
Global: Pizza pippo Looking for a good Pizza

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