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<?php |
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|
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namespace Bookit\Helpers; |
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|
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/** |
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* Bookit Serialization Helper |
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*/ |
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class SerializationHelper { |
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|
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/** |
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* Unserialize a stored value while rejecting anything that isn't a |
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* plain array, guarding against PHP object injection and suppressing |
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* the native warning on malformed input. |
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* |
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* @since 2.6.0.3 |
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* |
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* @param mixed $value |
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* @return array|false The unserialized array, or false if $value isn't a |
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* string, fails to unserialize, or unserializes to |
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* anything containing an object. |
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*/ |
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public static function safe_unserialize( $value ) { |
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if ( ! is_string( $value ) ) { |
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return false; |
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} |
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|
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// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged, WordPress.PHP.DiscouragedPHPFunctions.serialize_unserialize |
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$data = @unserialize( $value, array( 'allowed_classes' => false ) ); |
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|
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if ( ! is_array( $data ) || self::contains_object( $data ) ) { |
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return false; |
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} |
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|
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return $data; |
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} |
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|
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/** |
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* Recursively check whether a value contains an object, including a |
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* `__PHP_Incomplete_Class` produced by unserializing with |
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* `allowed_classes => false`. |
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* |
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* @since 2.6.0.3 |
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* |
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* @param mixed $value |
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* @return bool |
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*/ |
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private static function contains_object( $value ) { |
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if ( is_object( $value ) ) { |
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return true; |
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} |
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|
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if ( is_array( $value ) ) { |
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foreach ( $value as $item ) { |
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if ( self::contains_object( $item ) ) { |
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return true; |
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} |
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} |
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} |
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|
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return false; |
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} |
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} |
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|
