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@ 2015-12-06T13:24:01Z

<?php

$sInput = 'toggle 0,0 through 999,0';
$aLights = array();

for($x = 0; $x < 1000; $x++) {

	for($y = 0; $y < 1000; $y++) {

		$aLights[$x . 'x' . $y] = false;
	}
}

$aInput = explode("\r\n", $sInput);

foreach($aInput as $sInput) {

	preg_match('#(?<action>turn (?:on|off)|toggle) (?<from_x>[0-9]{1,3}),(?<from_y>[0-9]{1,3}) through (?<to_x>[0-9]{1,3}),(?<to_y>[0-9]{1,3})#', $sInput, $aMatch);
	
	for($x = $aMatch['from_x']; $x <= $aMatch['to_x']; $x++) {
	
		for($y = $aMatch['from_y']; $y <= $aMatch['to_y']; $y++) {
		
			switch($aMatch['action']) {
			
				case 'turn on':
					$aLights[$x . 'x' . $y] = true;
					break;
					
				case 'turn off':
					$aLights[$x . 'x' . $y] = false;
					break;
					
				case 'toggle':
					$aLights[$x . 'x' . $y] = ($aLights[$x . 'x' . $y] ? false : true);
					break;
			}
		}
	}
}

echo count(array_filter($aLights));

Output for git.master, rfc.property-hooks: Fatal error: Out of memory (allocated 20971520 bytes) (tried to allocate 20971520 bytes) in /in/cVVXk on line 10 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for git.master_jit: Fatal error: Out of memory (allocated 11534336 bytes) (tried to allocate 10485760 bytes) in /in/cVVXk on line 10 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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