Lowered PHP requirement to 5.3.7

framework/composer.json

@@ -64,7 +64,7 @@
 		"source": "https://github.com/yiisoft/yii2"
 	},
 	"require": {
-		"php": ">=5.3.11",
+		"php": ">=5.3.7",
 		"ext-mbstring": "*",
 		"lib-pcre": "*"
 	},

framework/yii/requirements/requirements.php

@@ -9,9 +9,9 @@ return array(
 	array(
 		'name' => 'PHP version',
 		'mandatory' => true,
-		'condition' => version_compare(PHP_VERSION, '5.3.11', '>='),
+		'condition' => version_compare(PHP_VERSION, '5.3.7', '>='),
 		'by' => '<a href="http://www.yiiframework.com">Yii Framework</a>',
-		'memo' => 'PHP 5.3.11 or higher is required.',
+		'memo' => 'PHP 5.3.7 or higher is required.',
 	),
 	array(
 		'name' => 'Reflection extension',