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<?php $vars = [ 'code_user' => 'Loz', 'code_order' => 5504 ]; $template = 'Dear [code_user] your new order code is [code_order]!'; $result = preg_replace_callback('/\[[ ]{0,}([\w\_-]{1,})[ ]{0,}\]/', function ($match) use ($vars) { return array_key_exists($match[1], $vars) ? $vars[$match[1]] : ''; }, $template); echo $result;
Output for git.master, git.master_jit, rfc.property-hooks
Dear Loz your new order code is 5504!

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