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<?php $customTemplate = " <div> <<This>> <<that>> </div> "; $MyClass = new class{ function get($tag) { if ($tag == 'This') return '<h1>Something</h1>'; if ($tag == 'that') return '<p>For example</p>'; return '**not found**'; } }; function process_template($template, $MyClass, $begin = '<<', $end = '>>') { return preg_replace_callback("/$begin(\w+)$end/", function($var) use ($MyClass) { return $MyClass->get($var[1]); }, $template); } $processed = process_template($customTemplate, $MyClass); var_dump($processed);
Output for 7.1.25 - 7.1.30, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(60) " <div> <h1>Something</h1> <p>For example</p> </div> "

preferences:
105.61 ms | 1447 KiB | 4 Q