Online PHP editor | rfc for 2Xacb

@ 2015-04-24T00:44:03Z

<?php
error_reporting(-1);
ini_set('display_errors', 1);

class system_tags {
	function __call($name, $params) {
		return '(METHOD "' . $name . '" WAS CALLED WITH PARAMS ' . implode(', ', $params) . ')';
	}
}

class App {
	function run() {
		// Prerequisites.
		$system_tags = new system_tags();
		
		$core = new \stdClass();
		$core->tags = array(
			'hello' => 'tagHelloMethod(1, 2)',
			'world' => 'tagWorldMethod(3, 4)',
		);
		
		// Approach 1.
		$this->template = 'Blah blah {hello} blah blah {world}.';
		$this->withStrReplace($core, $system_tags);
		echo $this->template . "\n";
		
		// Approach 2.
		$this->template = 'Blah blah {hello} blah blah {world}.';
		$this->withRegexReplaceCallback($core, $system_tags);
		echo $this->template . "\n";
	}
	
	function withStrReplace($core, $system_tags) {
	    
		foreach($core->tags as $tag_name => $tag_method) {
			$this->template = str_replace(
				'{' . $tag_name . '}', 
				eval('return $system_tags->' . $tag_method . ';'), 
				$this->template
			);
		}
		
	}
		
	function withRegexReplaceCallback($core, $system_tags) {
	    
		$callback = static function ($matches) use (& $tag_method, $system_tags) {
			return eval('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
			);
		}
		
	}
}

$app = new App();
$app->run();

Output for git.master, git.master_jit, rfc.property-hooks: Deprecated: Creation of dynamic property App::$template is deprecated in /in/2Xacb on line 23 Blah blah (METHOD "tagHelloMethod" WAS CALLED WITH PARAMS 1, 2) blah blah (METHOD "tagWorldMethod" WAS CALLED WITH PARAMS 3, 4). Blah blah (METHOD "tagHelloMethod" WAS CALLED WITH PARAMS 1, 2) blah blah (METHOD "tagWorldMethod" WAS CALLED WITH PARAMS 3, 4).

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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