Subversion Repositories oidplus

<?php

/*

 * OIDplus 2.0

 * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

namespace ViaThinkSoft\OIDplus;

class OIDplusQueryResultMySQLNoNativeDriver extends OIDplusQueryResult {

        // Based on https://www.php.net/manual/de/mysqli-stmt.get-result.php#113398

        protected $stmt = null;

        protected $nCols = null;

        protected $no_resultset = null;

        public function __construct($stmt) {

                $metadata = mysqli_stmt_result_metadata($stmt);

                $this->no_resultset = is_bool($metadata);

                if (!$this->no_resultset) {

                        $this->nCols = mysqli_num_fields($metadata);

                        $this->stmt = $stmt;

                        mysqli_free_result($metadata);

                        $this->stmt->store_result();

                }

        }

        public function containsResultSet(): bool {

                return !$this->no_resultset;

        }

        public function num_rows(): int {

                if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));

                //$this->stmt->store_result();

                return $this->stmt->num_rows;

        }

        public function fetch_array()/*: ?array*/ {

                if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));

                // https://stackoverflow.com/questions/10752815/mysqli-get-result-alternative , modified

                $stmt = $this->stmt;

                //$this->stmt->store_result();

                $resultkeys = array();

                $thisName = "";

                if ($stmt->num_rows==0) return null;

                for ($i = 0; $i < $stmt->num_rows; $i++) {

                        $metadata = $stmt->result_metadata();

                        while ($field = $metadata->fetch_field()) {

                                $thisName = $field->name;

                                $resultkeys[] = $thisName;

                        }

                }

                $ret = array();

                $args = array();

                for ($i=0; $i<$this->nCols; $i++) {

                        $ret[$i] = NULL;

                        $theValue = $resultkeys[$i];

                        $ret[$theValue] = NULL; // will be overwritten by mysqli_stmt_bind_result

                        $args[] = &$ret[$theValue];

                }

                if (!mysqli_stmt_bind_result($this->stmt, ...$args)) {

                        return null;

                }

                // This should advance the "$stmt" cursor.

                if (!mysqli_stmt_fetch($this->stmt)) {

                        return null;

                }

                // Return the array we built.

                return $ret;

        }

        public function fetch_object()/*: ?object*/ {

                if ($this->no_resultset) throw new OIDplusConfigInitializationException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));

                $ary = $this->fetch_array();

                if (!$ary) return null;

                $obj = new \stdClass;

                foreach ($ary as $name => $val) {

                        $obj->$name = $val;

                }

                return $obj;

        }

}