Add PDO::checkLiveness method

Exposes the driver's underlying pdo_dbh_check_liveness_func to PHP
scripts that may want to check if a connection is still open.

ext/pdo/pdo_dbh.c

@@ -1096,6 +1096,29 @@ PHP_METHOD(PDO, query)
 }
 /* }}} */
 
+/* {{{ Performs a liveness check */
+PHP_METHOD(PDO, checkLiveness)
+{
+	pdo_dbh_t *dbh = Z_PDO_DBH_P(ZEND_THIS);
+
+	ZEND_PARSE_PARAMETERS_NONE();
+
+	PDO_CONSTRUCT_CHECK;
+
+	if (!dbh->methods->check_liveness) {
+		zend_throw_exception_ex(php_pdo_get_exception(), 0, "This driver doesn't support checkLiveness");
+		RETURN_THROWS();
+	}
+
+	if (dbh->methods->check_liveness(dbh) != FAILURE) {
+		RETURN_TRUE;
+	}
+
+	PDO_HANDLE_DBH_ERR();
+	RETURN_FALSE;
+}
+/* }}} */
+
 /* {{{ quotes string for use in a query. The optional paramtype acts as a hint for drivers that have alternate quoting styles. The default value is PDO_PARAM_STR */
 PHP_METHOD(PDO, quote)
 {

ext/pdo/pdo_dbh.stub.php

@@ -9,6 +9,9 @@ public function __construct(string $dsn, ?string $username = null, ?string $pass
     /** @return bool */
     public function beginTransaction() {}
 
+    /** @return bool */
+    public function checkLiveness() {}
+
     /** @return bool */
     public function commit() {}
 

ext/pdo/pdo_dbh_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 36270d1418fc4ddd8f79018372b0ef00fb6f5889 */
+ * Stub hash: 379b21e9f0e26c7095c7366fa1eac71388ba0014 */
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_PDO___construct, 0, 0, 1)
 	ZEND_ARG_TYPE_INFO(0, dsn, IS_STRING, 0)
@@ -11,6 +11,8 @@ ZEND_END_ARG_INFO()
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_PDO_beginTransaction, 0, 0, 0)
 ZEND_END_ARG_INFO()
 
+#define arginfo_class_PDO_checkLiveness arginfo_class_PDO_beginTransaction
+
 #define arginfo_class_PDO_commit arginfo_class_PDO_beginTransaction
 
 #define arginfo_class_PDO_errorCode arginfo_class_PDO_beginTransaction
@@ -59,6 +61,7 @@ ZEND_END_ARG_INFO()
 
 ZEND_METHOD(PDO, __construct);
 ZEND_METHOD(PDO, beginTransaction);
+ZEND_METHOD(PDO, checkLiveness);
 ZEND_METHOD(PDO, commit);
 ZEND_METHOD(PDO, errorCode);
 ZEND_METHOD(PDO, errorInfo);
@@ -77,6 +80,7 @@ ZEND_METHOD(PDO, setAttribute);
 static const zend_function_entry class_PDO_methods[] = {
 	ZEND_ME(PDO, __construct, arginfo_class_PDO___construct, ZEND_ACC_PUBLIC)
 	ZEND_ME(PDO, beginTransaction, arginfo_class_PDO_beginTransaction, ZEND_ACC_PUBLIC)
+	ZEND_ME(PDO, checkLiveness, arginfo_class_PDO_checkLiveness, ZEND_ACC_PUBLIC)
 	ZEND_ME(PDO, commit, arginfo_class_PDO_commit, ZEND_ACC_PUBLIC)
 	ZEND_ME(PDO, errorCode, arginfo_class_PDO_errorCode, ZEND_ACC_PUBLIC)
 	ZEND_ME(PDO, errorInfo, arginfo_class_PDO_errorInfo, ZEND_ACC_PUBLIC)