1 <?php |
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2 /*********************************************************************** |
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3 |
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4 Copyright (C) 2002-2005 Rickard Andersson (rickard@punbb.org) |
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5 |
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6 This file is part of PunBB. |
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7 |
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8 PunBB is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published |
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10 by the Free Software Foundation; either version 2 of the License, |
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11 or (at your option) any later version. |
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12 |
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13 PunBB is distributed in the hope that it will be useful, but |
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14 WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with this program; if not, write to the Free Software |
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20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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21 MA 02111-1307 USA |
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22 |
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23 ************************************************************************/ |
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24 |
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25 |
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26 // Make sure we have built in support for MySQL |
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27 if (!function_exists('mysqli_connect')) |
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28 exit('This PHP environment doesn\'t have Improved MySQL (mysqli) support built in. Improved MySQL support is required if you want to use a MySQL 4.1 (or later) database to run this forum. Consult the PHP documentation for further assistance.'); |
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29 |
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30 |
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31 class DBLayer |
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32 { |
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33 var $prefix; |
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34 var $link_id; |
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35 var $query_result; |
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36 |
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37 var $saved_queries = array(); |
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38 var $num_queries = 0; |
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39 |
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40 |
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41 function DBLayer($db_host, $db_username, $db_password, $db_name, $db_prefix, $foo) |
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42 { |
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43 $this->prefix = $db_prefix; |
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44 |
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45 // Was a custom port supplied with $db_host? |
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46 if (strpos($db_host, ':') !== false) |
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47 list($db_host, $db_port) = explode(':', $db_host); |
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48 |
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49 if (isset($db_port)) |
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50 $this->link_id = @mysqli_connect($db_host, $db_username, $db_password, $db_name, $db_port); |
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51 else |
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52 $this->link_id = @mysqli_connect($db_host, $db_username, $db_password, $db_name); |
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53 |
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54 if (!$this->link_id) |
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55 error('Unable to connect to MySQL and select database. MySQL reported: '.mysqli_connect_error(), __FILE__, __LINE__); |
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56 } |
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57 |
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58 |
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59 function start_transaction() |
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60 { |
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61 return; |
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62 } |
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63 |
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64 |
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65 function end_transaction() |
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66 { |
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67 return; |
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68 } |
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69 |
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70 |
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71 function query($sql, $unbuffered = false) |
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72 { |
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73 if (defined('PUN_SHOW_QUERIES')) |
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74 $q_start = get_microtime(); |
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75 |
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76 $this->query_result = @mysqli_query($this->link_id, $sql); |
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77 |
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78 if ($this->query_result) |
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79 { |
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80 if (defined('PUN_SHOW_QUERIES')) |
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81 $this->saved_queries[] = array($sql, sprintf('%.5f', get_microtime() - $q_start)); |
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82 |
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83 ++$this->num_queries; |
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84 |
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85 return $this->query_result; |
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86 } |
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87 else |
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88 { |
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89 if (defined('PUN_SHOW_QUERIES')) |
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90 $this->saved_queries[] = array($sql, 0); |
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91 |
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92 return false; |
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93 } |
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94 } |
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95 |
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96 |
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97 function result($query_id = 0, $row = 0) |
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98 { |
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99 if ($query_id) |
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100 { |
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101 if ($row) |
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102 @mysqli_data_seek($query_id, $row); |
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103 |
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104 $cur_row = @mysqli_fetch_row($query_id); |
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105 return $cur_row[0]; |
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106 } |
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107 else |
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108 return false; |
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109 } |
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110 |
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111 |
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112 function fetch_assoc($query_id = 0) |
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113 { |
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114 return ($query_id) ? @mysqli_fetch_assoc($query_id) : false; |
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115 } |
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116 |
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117 |
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118 function fetch_row($query_id = 0) |
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119 { |
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120 return ($query_id) ? @mysqli_fetch_row($query_id) : false; |
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121 } |
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122 |
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123 |
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124 function num_rows($query_id = 0) |
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125 { |
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126 return ($query_id) ? @mysqli_num_rows($query_id) : false; |
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127 } |
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128 |
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129 |
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130 function affected_rows() |
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131 { |
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132 return ($this->link_id) ? @mysqli_affected_rows($this->link_id) : false; |
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133 } |
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134 |
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135 |
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136 function insert_id() |
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137 { |
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138 return ($this->link_id) ? @mysqli_insert_id($this->link_id) : false; |
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139 } |
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140 |
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141 |
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142 function get_num_queries() |
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143 { |
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144 return $this->num_queries; |
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145 } |
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146 |
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147 |
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148 function get_saved_queries() |
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149 { |
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150 return $this->saved_queries; |
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151 } |
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152 |
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153 |
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154 function free_result($query_id = false) |
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155 { |
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156 return ($query_id) ? @mysqli_free_result($query_id) : false; |
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157 } |
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158 |
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159 |
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160 function escape($str) |
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161 { |
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162 return is_array($str) ? '' : mysqli_real_escape_string($this->link_id, $str); |
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163 } |
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164 |
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165 |
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166 function error() |
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167 { |
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168 $result['error_sql'] = @current(@end($this->saved_queries)); |
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169 $result['error_no'] = @mysqli_errno($this->link_id); |
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170 $result['error_msg'] = @mysqli_error($this->link_id); |
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171 |
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172 return $result; |
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173 } |
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174 |
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175 |
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176 function close() |
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177 { |
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178 if ($this->link_id) |
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179 { |
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180 if ($this->query_result) |
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181 @mysqli_free_result($this->query_result); |
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182 |
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183 return @mysqli_close($this->link_id); |
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184 } |
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185 else |
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186 return false; |
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187 } |
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188 } |
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