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run code in 200+ php & hhvm versions
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<?php error_reporting(-1); ini_set('display_errors', 1); class system_tags { function __call($name, $params) { return 'TAG "' . $name . '" WAS HERE'; } } class App { function run() { // Prerequisites. $system_tags = new system_tags(); $core = new \stdClass(); $core->tags = array( 'hello' => 'HELLO!', 'world' => 'WORLD!', ); $this->template = 'Blah blah {hello} blah blah {world}.'; $this->withStrReplace($core, $system_tags); $this->template = 'Blah blah {hello} blah blah {world}.'; $this->withRegexReplaceCallback($core, $system_tags); } function withStrReplace($core, $system_tags) { foreach($core->tags as $tag_name => $tag_method) { $this->template = str_replace( '{' . $tag_name . '}', $system_tags->{$tag_method}(), $this->template ); } } function withRegexReplaceCallback($core, $system_tags) { $callback = static function ($matches) use (& $tag_method, $system_tags) { return $system_tags->{$tag_method}(); }; foreach($core->tags as $tag_name => $tag_method) { $this->template = preg_replace_callback( '/\{' . preg_quote($tag_name) . '\}/', $callback, $this->template ); } echo $this->template . "\n<br>"; } } $app = new App(); $app->run();
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