Supporting APCu on PHP 7

.travis.yml

@@ -41,6 +41,8 @@ before_script:
   - sh -c "if [ '$PHPCS' = '1' ]; then composer global require 'cakephp/cakephp-codesniffer:1.*'; fi"
   - sh -c "if [ '$PHPCS' = '1' ]; then ~/.composer/vendor/bin/phpcs --config-set installed_paths ~/.composer/vendor/cakephp/cakephp-codesniffer; fi"
   - echo "extension = memcached.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
+  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "7.0" ]] ; then print "yes" | pecl install apcu-5.1.3; else print "yes" | pecl install apcu-4.0.11; fi
+  - echo -e "extension = apcu.so\napc.enable_cli=1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
   - phpenv rehash
   - set +H
   - echo "<?php

lib/Cake/Cache/Engine/ApcEngine.php

@@ -31,6 +31,13 @@ class ApcEngine extends CacheEngine {
  */
 	protected $_compiledGroupNames = array();
 
+/**
+ * APC or APCu extension
+ *
+ * @var string
+ */
+	protected $_apcExtension = 'apc';
+
 /**
  * Initialize the Cache Engine
  *
@@ -47,6 +54,10 @@ class ApcEngine extends CacheEngine {
 		}
 		$settings += array('engine' => 'Apc');
 		parent::init($settings);
+		if (function_exists('apcu_dec')) {
+			$this->_apcExtension = 'apcu';
+			return true;
+		}
 		return function_exists('apc_dec');
 	}
 
@@ -63,8 +74,8 @@ class ApcEngine extends CacheEngine {
 		if ($duration) {
 			$expires = time() + $duration;
 		}
-		apc_store($key . '_expires', $expires, $duration);
+		$this->_apcCall('store', $key . '_expires', $expires, $duration);
-		return apc_store($key, $value, $duration);
+		return $this->_apcCall('store', $key, $value, $duration);
 	}
 
 /**
@@ -75,11 +86,11 @@ class ApcEngine extends CacheEngine {
  */
 	public function read($key) {
 		$time = time();
-		$cachetime = (int)apc_fetch($key . '_expires');
+		$cachetime = (int)$this->_apcCall('fetch', $key . '_expires');
 		if ($cachetime !== 0 && ($cachetime < $time || ($time + $this->settings['duration']) < $cachetime)) {
 			return false;
 		}
-		return apc_fetch($key);
+		return $this->_apcCall('fetch', $key);
 	}
 
 /**
@@ -90,7 +101,7 @@ class ApcEngine extends CacheEngine {
  * @return New incremented value, false otherwise
  */
 	public function increment($key, $offset = 1) {
-		return apc_inc($key, $offset);
+		return $this->_apcCall('inc', $key, $offset);
 	}
 
 /**
@@ -101,7 +112,7 @@ class ApcEngine extends CacheEngine {
  * @return New decremented value, false otherwise
  */
 	public function decrement($key, $offset = 1) {
-		return apc_dec($key, $offset);
+		return $this->_apcCall('dec', $key, $offset);
 	}
 
 /**
@@ -111,7 +122,7 @@ class ApcEngine extends CacheEngine {
  * @return bool True if the value was successfully deleted, false if it didn't exist or couldn't be removed
  */
 	public function delete($key) {
-		return apc_delete($key);
+		return $this->_apcCall('delete', $key);
 	}
 
 /**
@@ -131,13 +142,13 @@ class ApcEngine extends CacheEngine {
 				'/^' . preg_quote($this->settings['prefix'], '/') . '/',
 				APC_ITER_NONE
 			);
-			apc_delete($iterator);
+			$this->_apcCall('delete', $iterator);
 			return true;
 		}
-		$cache = apc_cache_info('user');
+		$cache = $this->_apcExtension === 'apc' ? apc_cache_info('user') : apcu_cache_info();
 		foreach ($cache['cache_list'] as $key) {
 			if (strpos($key['info'], $this->settings['prefix']) === 0) {
-				apc_delete($key['info']);
+				$this->_apcCall('delete', $key['info']);
 			}
 		}
 		return true;
@@ -157,11 +168,11 @@ class ApcEngine extends CacheEngine {
 			}
 		}
 
-		$groups = apc_fetch($this->_compiledGroupNames);
+		$groups = $this->_apcCall('fetch', $this->_compiledGroupNames);
 		if (count($groups) !== count($this->settings['groups'])) {
 			foreach ($this->_compiledGroupNames as $group) {
 				if (!isset($groups[$group])) {
-					apc_store($group, 1);
+					$this->_apcCall('store', $group, 1);
 					$groups[$group] = 1;
 				}
 			}
@@ -184,7 +195,8 @@ class ApcEngine extends CacheEngine {
  * @return bool success
  */
 	public function clearGroup($group) {
-		apc_inc($this->settings['prefix'] . $group, 1, $success);
+		$func = function_exists('apc_inc') ? 'apc_inc' : 'apcu_inc';
+		$func($this->settings['prefix'] . $group, 1, $success);
 		return $success;
 	}
 
@@ -203,7 +215,18 @@ class ApcEngine extends CacheEngine {
 		if ($duration) {
 			$expires = time() + $duration;
 		}
-		apc_add($key . '_expires', $expires, $duration);
+		$this->_apcCall('add', $key . '_expires', $expires, $duration);
-		return apc_add($key, $value, $duration);
+		return $this->_apcCall('add', $key, $value, $duration);
+	}
+
+/**
+ * Call APC(u) function
+ *
+ * @return mixed
+ */
+	protected function _apcCall() {
+		$params = func_get_args();
+		$func = $this->_apcExtension . '_' . array_shift($params);
+		return call_user_func_array($func, $params);
 	}
 }

lib/Cake/Test/Case/Cache/Engine/ApcEngineTest.php

@@ -32,7 +32,8 @@ class ApcEngineTest extends CakeTestCase {
  */
 	public function setUp() {
 		parent::setUp();
-		$this->skipIf(!function_exists('apc_store'), 'Apc is not installed or configured properly.');
+		$hasApc = extension_loaded('apc') || extension_loaded('apcu');
+		$this->skipIf(!$hasApc, 'Apc is not installed or configured properly.');
 
 		if (PHP_SAPI === 'cli') {
 			$this->skipIf(!ini_get('apc.enable_cli'), 'APC is not enabled for the CLI.');
@@ -147,7 +148,8 @@ class ApcEngineTest extends CakeTestCase {
  * @return void
  */
 	public function testDecrement() {
-		$this->skipIf(!function_exists('apc_dec'), 'No apc_dec() function, cannot test decrement().');
+		$hasSupport = function_exists('apc_dec') || function_exists('apcu_dec');
+		$this->skipIf(!$hasSupport, 'No apc_dec()/apcu_dec() function, cannot test decrement().');
 
 		$result = Cache::write('test_decrement', 5, 'apc');
 		$this->assertTrue($result);
@@ -171,7 +173,8 @@ class ApcEngineTest extends CakeTestCase {
  * @return void
  */
 	public function testIncrement() {
-		$this->skipIf(!function_exists('apc_inc'), 'No apc_inc() function, cannot test increment().');
+		$hasSupport = function_exists('apc_inc') || function_exists('apcu_inc');
+		$this->skipIf(!function_exists('apc_inc'), 'No apc_inc()/apcu_inc() function, cannot test increment().');
 
 		$result = Cache::write('test_increment', 5, 'apc');
 		$this->assertTrue($result);
@@ -195,14 +198,14 @@ class ApcEngineTest extends CakeTestCase {
  * @return void
  */
 	public function testClear() {
-		apc_store('not_cake', 'survive');
+		$this->_apcCall('store', 'not_cake', 'survive');
 		Cache::write('some_value', 'value', 'apc');
 
 		$result = Cache::clear(false, 'apc');
 		$this->assertTrue($result);
 		$this->assertFalse(Cache::read('some_value', 'apc'));
-		$this->assertEquals('survive', apc_fetch('not_cake'));
+		$this->assertEquals('survive', $this->_apcCall('fetch', 'not_cake'));
-		apc_delete('not_cake');
+		$this->_apcCall('delete', 'not_cake');
 	}
 
 /**
@@ -222,12 +225,12 @@ class ApcEngineTest extends CakeTestCase {
 		$this->assertTrue(Cache::write('test_groups', 'value', 'apc_groups'));
 		$this->assertEquals('value', Cache::read('test_groups', 'apc_groups'));
 
-		apc_inc('test_group_a');
+		$this->_apcCall('inc', 'test_group_a');
 		$this->assertFalse(Cache::read('test_groups', 'apc_groups'));
 		$this->assertTrue(Cache::write('test_groups', 'value2', 'apc_groups'));
 		$this->assertEquals('value2', Cache::read('test_groups', 'apc_groups'));
 
-		apc_inc('test_group_b');
+		$this->_apcCall('inc', 'test_group_b');
 		$this->assertFalse(Cache::read('test_groups', 'apc_groups'));
 		$this->assertTrue(Cache::write('test_groups', 'value3', 'apc_groups'));
 		$this->assertEquals('value3', Cache::read('test_groups', 'apc_groups'));
@@ -292,4 +295,16 @@ class ApcEngineTest extends CakeTestCase {
 		$result = Cache::add('test_add_key', 'test data 2', 'apc');
 		$this->assertFalse($result);
 	}
+
+/**
+ * Call APC/APCu function
+ *
+ * @return mixed
+ */
+	protected function _apcCall() {
+		$params = func_get_args();
+		$ext = extension_loaded('apc') ? 'apc' : 'apcu';
+		$func = $ext . '_' . array_shift($params);
+		return call_user_func_array($func, $params);
+	}
 }