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  1. <?php
  2.  
  3. /*
  4.  * OIDplus 2.0
  5.  * Copyright 2019 - 2023 Daniel Marschall, ViaThinkSoft
  6.  *
  7.  * Licensed under the Apache License, Version 2.0 (the "License");
  8.  * you may not use this file except in compliance with the License.
  9.  * You may obtain a copy of the License at
  10.  *
  11.  *     http://www.apache.org/licenses/LICENSE-2.0
  12.  *
  13.  * Unless required by applicable law or agreed to in writing, software
  14.  * distributed under the License is distributed on an "AS IS" BASIS,
  15.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16.  * See the License for the specific language governing permissions and
  17.  * limitations under the License.
  18.  */
  19.  
  20. namespace ViaThinkSoft\OIDplus;
  21.  
  22. // phpcs:disable PSR1.Files.SideEffects
  23. \defined('INSIDE_OIDPLUS') or die;
  24. // phpcs:enable PSR1.Files.SideEffects
  25.  
  26. class OIDplusQueryResultMySQLNoNativeDriver extends OIDplusQueryResult {
  27.         // Based on https://www.php.net/manual/de/mysqli-stmt.get-result.php#113398
  28.  
  29.         protected $stmt = null;
  30.         protected $nCols = null;
  31.         protected $no_resultset = null;
  32.  
  33.         public function __construct($stmt) {
  34.                 $metadata = mysqli_stmt_result_metadata($stmt);
  35.  
  36.                 $this->no_resultset = is_bool($metadata);
  37.  
  38.                 if (!$this->no_resultset) {
  39.                         $this->nCols = mysqli_num_fields($metadata);
  40.                         $this->stmt = $stmt;
  41.  
  42.                         mysqli_free_result($metadata);
  43.  
  44.                         $this->stmt->store_result();
  45.                 }
  46.         }
  47.  
  48.         public function containsResultSet(): bool {
  49.                 return !$this->no_resultset;
  50.         }
  51.  
  52.         public function num_rows(): int {
  53.                 if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  54.  
  55.                 //$this->stmt->store_result();
  56.                 return $this->stmt->num_rows;
  57.         }
  58.  
  59.         public function fetch_array()/*: ?array*/ {
  60.                 if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  61.  
  62.                 // https://stackoverflow.com/questions/10752815/mysqli-get-result-alternative , modified
  63.                 $stmt = $this->stmt;
  64.                 //$this->stmt->store_result();
  65.                 $resultkeys = array();
  66.                 $thisName = "";
  67.  
  68.                 if ($stmt->num_rows==0) return null;
  69.  
  70.                 for ($i = 0; $i < $stmt->num_rows; $i++) {
  71.                         $metadata = $stmt->result_metadata();
  72.                         while ($field = $metadata->fetch_field()) {
  73.                                 $thisName = $field->name;
  74.                                 $resultkeys[] = $thisName;
  75.                         }
  76.                 }
  77.  
  78.                 $ret = array();
  79.                 $args = array();
  80.                 for ($i=0; $i<$this->nCols; $i++) {
  81.                         $ret[$i] = NULL;
  82.                         $theValue = $resultkeys[$i];
  83.                         $ret[$theValue] = NULL; // will be overwritten by mysqli_stmt_bind_result
  84.                         $args[] = &$ret[$theValue];
  85.                 }
  86.                 if (!mysqli_stmt_bind_result($this->stmt, ...$args)) {
  87.                         return null;
  88.                 }
  89.  
  90.                 // This should advance the "$stmt" cursor.
  91.                 if (!mysqli_stmt_fetch($this->stmt)) {
  92.                         return null;
  93.                 }
  94.  
  95.                 // Return the array we built.
  96.                 return $ret;
  97.         }
  98.  
  99.         public function fetch_object()/*: ?object*/ {
  100.                 if ($this->no_resultset) throw new OIDplusConfigInitializationException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  101.  
  102.                 $ary = $this->fetch_array();
  103.                 if (!$ary) return null;
  104.  
  105.                 $obj = new \stdClass;
  106.                 foreach ($ary as $name => $val) {
  107.                         $obj->$name = $val;
  108.                 }
  109.                 return $obj;
  110.         }
  111. }
  112.