Add a fix for PDO::ATTR_STRINGIFY_FETCHES=false with PHP < 8.1

Author: JanJakes

wp-includes/sqlite-ast/class-wp-pdo-mysql-on-sqlite.php

@@ -786,6 +786,23 @@ public function query( string $query, ?int $fetch_mode = PDO::FETCH_COLUMN, ...$
 			$columns       = is_array( $this->last_column_meta ) ? $this->last_column_meta : array();
 			$rows          = is_array( $this->last_result ) ? $this->last_result : array();
 			$affected_rows = is_int( $this->last_return_value ) ? $this->last_return_value : 0;
+
+			/**
+			 * With PHP < 8.1, the "PDO::ATTR_STRINGIFY_FETCHES" value of "false"
+			 * is not working correctly with the PDO SQLite driver. In such case,
+			 * we need to manually convert the row values to the correct types.
+			 */
+			if ( PHP_VERSION_ID < 80100 && ! $this->getAttribute( PDO::ATTR_STRINGIFY_FETCHES ) ) {
+				foreach ( $row as $i => $value ) {
+					$type = $columns[ $i ]['native_type'];
+					if ( 'integer' === $type ) {
+						$row[ $i ] = (int) $value;
+					} elseif ( 'float' === $type ) {
+						$row[ $i ] = (float) $value;
+					}
+				}
+			}
+
 			return new WP_PDO_Synthetic_Statement( $this, $columns, $rows, $affected_rows );
 		} catch ( Throwable $e ) {
 			try {