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  1. <?php
  2.  
  3. /*
  4.  * OIDplus 2.0
  5.  * Copyright 2019 - 2021 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. class OIDplusQueryResultMySQLNoNativeDriver extends OIDplusQueryResult {
  23.         // Based on https://www.php.net/manual/de/mysqli-stmt.get-result.php#113398
  24.  
  25.         protected $stmt = null;
  26.         protected $nCols = null;
  27.         protected $no_resultset = null;
  28.  
  29.         public function __construct($stmt) {
  30.                 $metadata = mysqli_stmt_result_metadata($stmt);
  31.  
  32.                 $this->no_resultset = is_bool($metadata);
  33.  
  34.                 if (!$this->no_resultset) {
  35.                         $this->nCols = mysqli_num_fields($metadata);
  36.                         $this->stmt = $stmt;
  37.  
  38.                         mysqli_free_result($metadata);
  39.  
  40.                         $this->stmt->store_result();
  41.                 }
  42.         }
  43.  
  44.         public function containsResultSet(): bool {
  45.                 return !$this->no_resultset;
  46.         }
  47.  
  48.         public function num_rows(): int {
  49.                 if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  50.  
  51.                 //$this->stmt->store_result();
  52.                 return $this->stmt->num_rows;
  53.         }
  54.  
  55.         public function fetch_array()/*: ?array*/ {
  56.                 if ($this->no_resultset) throw new OIDplusException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  57.  
  58.                 // https://stackoverflow.com/questions/10752815/mysqli-get-result-alternative , modified
  59.                 $stmt = $this->stmt;
  60.                 //$this->stmt->store_result();
  61.                 $resultkeys = array();
  62.                 $thisName = "";
  63.  
  64.                 if ($stmt->num_rows==0) return null;
  65.  
  66.                 for ($i = 0; $i < $stmt->num_rows; $i++) {
  67.                         $metadata = $stmt->result_metadata();
  68.                         while ($field = $metadata->fetch_field()) {
  69.                                 $thisName = $field->name;
  70.                                 $resultkeys[] = $thisName;
  71.                         }
  72.                 }
  73.  
  74.                 $ret = array();
  75.                 $args = array();
  76.                 for ($i=0; $i<$this->nCols; $i++) {
  77.                         $ret[$i] = NULL;
  78.                         $theValue = $resultkeys[$i];
  79.                         $ret[$theValue] = NULL; // will be overwritten by mysqli_stmt_bind_result
  80.                         $args[] = &$ret[$theValue];
  81.                 }
  82.                 if (!mysqli_stmt_bind_result($this->stmt, ...$args)) {
  83.                         return null;
  84.                 }
  85.  
  86.                 // This should advance the "$stmt" cursor.
  87.                 if (!mysqli_stmt_fetch($this->stmt)) {
  88.                         return null;
  89.                 }
  90.  
  91.                 // Return the array we built.
  92.                 return $ret;
  93.         }
  94.  
  95.         public function fetch_object()/*: ?object*/ {
  96.                 if ($this->no_resultset) throw new OIDplusConfigInitializationException(_L('The query has returned no result set (i.e. it was not a SELECT query)'));
  97.  
  98.                 $ary = $this->fetch_array();
  99.                 if (!$ary) return null;
  100.  
  101.                 $obj = new \stdClass;
  102.                 foreach ($ary as $name => $val) {
  103.                         $obj->$name = $val;
  104.                 }
  105.                 return $obj;
  106.         }
  107. }
  108.