Changeset 1178
- Timestamp:
- 04/26/2004 02:28:06 AM (21 years ago)
- File:
-
- 1 edited
-
trunk/wp-includes/wp-db.php (modified) (1 diff)
Legend:
- Unmodified
- Added
- Removed
-
trunk/wp-includes/wp-db.php
r964 r1178 1 1 <?php 2 // ================================================================== 3 // Author: Justin Vincent ([email protected]) 4 // Web: http://php.justinvincent.com 5 // Name: ezSQL 6 // Desc: Class to make it very easy to deal with mySQL database connections. 7 // WordPress is using this class to make the code cleaner and faster. 8 // We highly recommend it. 9 // We have modified the HTML it returns slightly. 10 11 define('EZSQL_VERSION', '1.21'); 12 define('OBJECT', 'OBJECT', true); 13 define('ARRAY_A', 'ARRAY_A', true); 14 define('ARRAY_N', 'ARRAY_N', true); 15 define('SAVEQUERIES', true); 16 17 // The Main Class, renamed to avoid conflicts. 18 19 class wpdb { 20 21 var $debug_called; 22 var $vardump_called; 23 var $show_errors = true; 24 var $querycount; 25 26 // ================================================================== 27 // DB Constructor - connects to the server and selects a database 28 29 function wpdb($dbuser, $dbpassword, $dbname, $dbhost) { 30 $this->dbh = @mysql_connect($dbhost,$dbuser,$dbpassword); 31 if ( ! $this->dbh ) { 32 die("<div> 33 <p><strong>Error establishing a database connection!</strong> This probably means that the connection information in your <code>wp-config.php</code> file is incorrect. Double check it and try again.</p> 34 <ul> 35 <li>Are you sure you have the correct user/password?</li> 36 <li>Are you sure that you have typed the correct hostname?</li> 37 <li>Are you sure that the database server is running?</li> 38 </ul> 39 <p><a href='http://wordpress.org/support/'>WordPress Support Forums</a></p> 40 </div>"); 2 // ================================================================== 3 // Author: Justin Vincent ([email protected]) 4 // Web: http://php.justinvincent.com 5 // Name: ezSQL 6 // Desc: Class to make it very easy to deal with mySQL database connections. 7 // WordPress is using this class to make the code cleaner and faster. 8 // We highly recommend it. 9 // We have modified the HTML it returns slightly. 10 11 define('EZSQL_VERSION', '1.21'); 12 define('OBJECT', 'OBJECT', true); 13 define('ARRAY_A', 'ARRAY_A', true); 14 define('ARRAY_N', 'ARRAY_N', true); 15 define('SAVEQUERIES', true); 16 17 // The Main Class, renamed to avoid conflicts. 18 19 class wpdb { 20 21 var $debug_called; 22 var $vardump_called; 23 var $show_errors = true; 24 var $querycount; 25 26 // ================================================================== 27 // DB Constructor - connects to the server and selects a database 28 29 function wpdb($dbuser, $dbpassword, $dbname, $dbhost) { 30 $this->dbh = @mysql_connect($dbhost,$dbuser,$dbpassword); 31 if ( ! $this->dbh ) { 32 die("<div> 33 <p><strong>Error establishing a database connection!</strong> This probably means that the connection information in your <code>wp-config.php</code> file is incorrect. Double check it and try again.</p> 34 <ul> 35 <li>Are you sure you have the correct user/password?</li> 36 <li>Are you sure that you have typed the correct hostname?</li> 37 <li>Are you sure that the database server is running?</li> 38 </ul> 39 <p><a href='http://wordpress.org/support/'>WordPress Support Forums</a></p> 40 </div>"); 41 } 42 43 $this->select($dbname); 44 $this->querycount = 0; 45 } 46 47 // ================================================================== 48 // Select a DB (if another one needs to be selected) 49 50 function select($db) { 51 if ( !@mysql_select_db($db,$this->dbh)) { 52 die(" 53 <p>We're having a little trouble selecting the proper database for WordPress.</p> 54 <ul> 55 <li>Are you sure it exists?</li> 56 <li>Your database name is currently specified as <code>" . DB_NAME ."</code>. Is this correct?</li> 57 <li>On some systems the name of your database is prefixed with your username, so it would be like username_wordpress. Could that be the problem?</li> 58 </ul> 59 <p><a href='http://wordpress.org/support/'>WordPress Support Forums</a></p>"); 60 } 61 } 62 63 // ==================================================================== 64 // Format a string correctly for safe insert under all PHP conditions 65 66 function escape($str) { 67 return mysql_escape_string(stripslashes($str)); 68 } 69 70 // ================================================================== 71 // Print SQL/DB error. 72 73 function print_error($str = '') { 74 // All errors go to the global error array $EZSQL_ERROR.. 75 global $EZSQL_ERROR; 76 77 // If no special error string then use mysql default.. 78 if ( !$str ) $str = mysql_error(); 79 80 // Log this error to the global array.. 81 $EZSQL_ERROR[] = array 82 ( 83 'query' => $this->last_query, 84 'error_str' => $str 85 ); 86 87 // Is error output turned on or not.. 88 if ( $this->show_errors ) { 89 // If there is an error then take note of it 90 print "<div id='error'> 91 <p><strong>SQL/DB Error:</strong><br /> 92 [<span style='color: #007;'>$str</span>]<br /> 93 <code>$this->last_query</code></p> 94 </div>"; 95 } else { 96 return false; 97 } 98 99 } 100 101 // ================================================================== 102 // Turn error handling on or off.. 103 104 function show_errors() { 105 $this->show_errors = true; 106 } 107 108 function hide_errors() { 109 $this->show_errors = false; 110 } 111 112 // ================================================================== 113 // Kill cached query results 114 115 function flush() { 116 // Get rid of these 117 $this->last_result = null; 118 $this->col_info = null; 119 $this->last_query = null; 120 121 } 122 123 // ================================================================== 124 // Basic Query - see docs for more detail 125 126 function query($query) { 127 128 // Flush cached values.. 129 $this->flush(); 130 131 // Log how the function was called 132 $this->func_call = "\$db->query(\"$query\")"; 133 134 // Keep track of the last query for debug.. 135 $this->last_query = $query; 136 137 // Perform the query via std mysql_query function.. 138 $this->result = mysql_query($query, $this->dbh); 139 ++$this->querycount; 140 if (SAVEQUERIES) { 141 $this->savedqueries[] = $query; 142 } 143 144 // If there was an insert, delete or update see how many rows were affected 145 // (Also, If there there was an insert take note of the insert_id 146 $query_type = array('insert','delete','update','replace'); 147 148 // loop through the above array 149 foreach ( $query_type as $word ) { 150 // This is true if the query starts with insert, delete or update 151 if ( preg_match("/^\\s*$word /i",$query) ) { 152 $this->rows_affected = mysql_affected_rows(); 153 // This gets the insert ID 154 if ( $word == 'insert' || $word == 'replace' ) { 155 $this->insert_id = mysql_insert_id($this->dbh); 156 } 157 $this->result = false; 41 158 } 42 43 $this->select($dbname); 44 $this->querycount = 0; 45 } 46 47 // ================================================================== 48 // Select a DB (if another one needs to be selected) 49 50 function select($db) { 51 if ( !@mysql_select_db($db,$this->dbh)) { 52 die(" 53 <p>We're having a little trouble selecting the proper database for WordPress.</p> 54 <ul> 55 <li>Are you sure it exists?</li> 56 <li>Your database name is currently specified as <code>" . DB_NAME ."</code>. Is this correct?</li> 57 <li>On some systems the name of your database is prefixed with your username, so it would be like username_wordpress. Could that be the problem?</li> 58 </ul> 59 <p><a href='http://wordpress.org/support/'>WordPress Support Forums</a></p>"); 159 } 160 161 if ( mysql_error() ) { // If there is an error then take note of it.. 162 $this->print_error(); 163 } else { 164 // In other words if this was a select statement.. 165 if ( $this->result ) { 166 // ======================================================= 167 // Take note of column info 168 169 $i=0; 170 while ($i < @mysql_num_fields($this->result)) { 171 $this->col_info[$i] = @mysql_fetch_field($this->result); 172 $i++; 173 } 174 175 // ======================================================= 176 // Store Query Results 177 178 $i=0; 179 while ( $row = @mysql_fetch_object($this->result) ) { 180 // Store relults as an objects within main array 181 $this->last_result[$i] = $row; 182 $i++; 183 } 184 185 // Log number of rows the query returned 186 $this->num_rows = $i; 187 188 @mysql_free_result($this->result); 189 190 191 // If there were results then return true for $db->query 192 if ( $i ) { 193 return true; 194 } else { 195 return false; 196 } 197 198 } else { // Update insert etc. was good.. 199 return true; 60 200 } 61 201 } 62 63 // ==================================================================== 64 // Format a string correctly for safe insert under all PHP conditions 65 66 function escape($str) { 67 return mysql_escape_string(stripslashes($str)); 68 } 69 70 // ================================================================== 71 // Print SQL/DB error. 72 73 function print_error($str = '') { 74 // All errors go to the global error array $EZSQL_ERROR.. 75 global $EZSQL_ERROR; 76 77 // If no special error string then use mysql default.. 78 if ( !$str ) $str = mysql_error(); 79 80 // Log this error to the global array.. 81 $EZSQL_ERROR[] = array 82 ( 83 'query' => $this->last_query, 84 'error_str' => $str 85 ); 86 87 // Is error output turned on or not.. 88 if ( $this->show_errors ) { 89 // If there is an error then take note of it 90 print "<div id='error'> 91 <p><strong>SQL/DB Error:</strong><br /> 92 [<span style='color: #007;'>$str</span>]<br /> 93 <code>$this->last_query</code></p> 94 </div>"; 202 } 203 204 // ================================================================== 205 // Get one variable from the DB - see docs for more detail 206 207 function get_var($query=null, $x=0, $y=0) { 208 209 // Log how the function was called 210 $this->func_call = "\$db->get_var(\"$query\",$x,$y)"; 211 212 // If there is a query then perform it if not then use cached results.. 213 if ( $query ) { 214 $this->query($query); 215 } 216 217 // Extract var out of cached results based x,y vals 218 if ( $this->last_result[$y] ) { 219 $values = array_values(get_object_vars($this->last_result[$y])); 220 } 221 222 // If there is a value return it else return null 223 return (isset($values[$x]) && $values[$x]!=='') ? $values[$x] : null; 224 } 225 226 // ================================================================== 227 // Get one row from the DB - see docs for more detail 228 229 function get_row($query=null, $output=OBJECT, $y=0) { 230 231 // Log how the function was called 232 $this->func_call = "\$db->get_row(\"$query\",$output,$y)"; 233 234 // If there is a query then perform it if not then use cached results.. 235 if ( $query ) { 236 $this->query($query); 237 } 238 239 // If the output is an object then return object using the row offset.. 240 if ( $output == OBJECT ) { 241 return $this->last_result[$y]?$this->last_result[$y]:null; 242 } 243 // If the output is an associative array then return row as such.. 244 elseif ( $output == ARRAY_A ) { 245 return $this->last_result[$y]?get_object_vars($this->last_result[$y]):null; 246 } 247 // If the output is an numerical array then return row as such.. 248 elseif ( $output == ARRAY_N ) { 249 return $this->last_result[$y]?array_values(get_object_vars($this->last_result[$y])):null; 250 } 251 // If invalid output type was specified.. 252 else { 253 $this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N"); 254 } 255 256 } 257 258 // ================================================================== 259 // Function to get 1 column from the cached result set based in X index 260 // se docs for usage and info 261 262 function get_col($query=null,$x=0) { 263 // If there is a query then perform it if not then use cached results.. 264 if ( $query ) { 265 $this->query($query); 266 } 267 // Extract the column values 268 for ( $i=0; $i < count($this->last_result); $i++ ) { 269 $new_array[$i] = $this->get_var(null,$x,$i); 270 } 271 return $new_array; 272 } 273 274 // ================================================================== 275 // Return the the query as a result set - see docs for more details 276 277 function get_results($query=null, $output = OBJECT){ 278 279 // Log how the function was called 280 $this->func_call = "\$db->get_results(\"$query\", $output)"; 281 282 // If there is a query then perform it if not then use cached results.. 283 if ( $query ) { 284 $this->query($query); 285 } 286 287 // Send back array of objects. Each row is an object 288 if ( $output == OBJECT ) { 289 return $this->last_result; 290 } elseif ( $output == ARRAY_A || $output == ARRAY_N ) { 291 if ( $this->last_result ) { 292 $i=0; 293 foreach( $this->last_result as $row ) { 294 $new_array[$i] = (array) $row; 295 if ( $output == ARRAY_N ) { 296 $new_array[$i] = array_values($new_array[$i]); 297 } 298 299 $i++; 300 } 301 302 return $new_array; 95 303 } else { 96 return false;304 return null; 97 305 } 98 99 } 100 101 // ================================================================== 102 // Turn error handling on or off.. 103 104 function show_errors() { 105 $this->show_errors = true; 106 } 107 108 function hide_errors() { 109 $this->show_errors = false; 110 } 111 112 // ================================================================== 113 // Kill cached query results 114 115 function flush() { 116 // Get rid of these 117 $this->last_result = null; 118 $this->col_info = null; 119 $this->last_query = null; 120 121 } 122 123 // ================================================================== 124 // Basic Query - see docs for more detail 125 126 function query($query) { 127 128 // Flush cached values.. 129 $this->flush(); 130 131 // Log how the function was called 132 $this->func_call = "\$db->query(\"$query\")"; 133 134 // Keep track of the last query for debug.. 135 $this->last_query = $query; 136 137 // Perform the query via std mysql_query function.. 138 $this->result = mysql_query($query, $this->dbh); 139 ++$this->querycount; 140 if (SAVEQUERIES) { 141 $this->savedqueries[] = $query; 306 } 307 } 308 309 310 // ================================================================== 311 // Function to get column meta data info pertaining to the last query 312 // see docs for more info and usage 313 314 function get_col_info($info_type='name', $col_offset=-1) { 315 316 if ( $this->col_info ) { 317 if ( $col_offset == -1 ) { 318 $i=0; 319 foreach($this->col_info as $col ) { 320 $new_array[$i] = $col->{$info_type}; 321 $i++; 322 } 323 return $new_array; 324 } else { 325 return $this->col_info[$col_offset]->{$info_type}; 142 326 } 143 327 144 // If there was an insert, delete or update see how many rows were affected 145 // (Also, If there there was an insert take note of the insert_id 146 $query_type = array('insert','delete','update','replace'); 147 148 // loop through the above array 149 foreach ( $query_type as $word ) { 150 // This is true if the query starts with insert, delete or update 151 if ( preg_match("/^\\s*$word /i",$query) ) { 152 $this->rows_affected = mysql_affected_rows(); 153 // This gets the insert ID 154 if ( $word == 'insert' || $word == 'replace' ) { 155 $this->insert_id = mysql_insert_id($this->dbh); 156 } 157 $this->result = false; 158 } 159 } 160 161 if ( mysql_error() ) { // If there is an error then take note of it.. 162 $this->print_error(); 163 } else { 164 // In other words if this was a select statement.. 165 if ( $this->result ) { 166 // ======================================================= 167 // Take note of column info 168 169 $i=0; 170 while ($i < @mysql_num_fields($this->result)) { 171 $this->col_info[$i] = @mysql_fetch_field($this->result); 172 $i++; 173 } 174 175 // ======================================================= 176 // Store Query Results 177 178 $i=0; 179 while ( $row = @mysql_fetch_object($this->result) ) { 180 // Store relults as an objects within main array 181 $this->last_result[$i] = $row; 182 $i++; 183 } 184 185 // Log number of rows the query returned 186 $this->num_rows = $i; 187 188 @mysql_free_result($this->result); 189 190 191 // If there were results then return true for $db->query 192 if ( $i ) { 193 return true; 194 } else { 195 return false; 196 } 197 198 } else { // Update insert etc. was good.. 199 return true; 200 } 201 } 202 } 203 204 // ================================================================== 205 // Get one variable from the DB - see docs for more detail 206 207 function get_var($query=null, $x=0, $y=0) { 208 209 // Log how the function was called 210 $this->func_call = "\$db->get_var(\"$query\",$x,$y)"; 211 212 // If there is a query then perform it if not then use cached results.. 213 if ( $query ) { 214 $this->query($query); 215 } 216 217 // Extract var out of cached results based x,y vals 218 if ( $this->last_result[$y] ) { 219 $values = array_values(get_object_vars($this->last_result[$y])); 220 } 221 222 // If there is a value return it else return null 223 return (isset($values[$x]) && $values[$x]!=='') ? $values[$x] : null; 224 } 225 226 // ================================================================== 227 // Get one row from the DB - see docs for more detail 228 229 function get_row($query=null, $output=OBJECT, $y=0) { 230 231 // Log how the function was called 232 $this->func_call = "\$db->get_row(\"$query\",$output,$y)"; 233 234 // If there is a query then perform it if not then use cached results.. 235 if ( $query ) { 236 $this->query($query); 237 } 238 239 // If the output is an object then return object using the row offset.. 240 if ( $output == OBJECT ) { 241 return $this->last_result[$y]?$this->last_result[$y]:null; 242 } 243 // If the output is an associative array then return row as such.. 244 elseif ( $output == ARRAY_A ) { 245 return $this->last_result[$y]?get_object_vars($this->last_result[$y]):null; 246 } 247 // If the output is an numerical array then return row as such.. 248 elseif ( $output == ARRAY_N ) { 249 return $this->last_result[$y]?array_values(get_object_vars($this->last_result[$y])):null; 250 } 251 // If invalid output type was specified.. 252 else { 253 $this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N"); 254 } 255 256 } 257 258 // ================================================================== 259 // Function to get 1 column from the cached result set based in X index 260 // se docs for usage and info 261 262 function get_col($query=null,$x=0) { 263 // If there is a query then perform it if not then use cached results.. 264 if ( $query ) { 265 $this->query($query); 266 } 267 // Extract the column values 268 for ( $i=0; $i < count($this->last_result); $i++ ) { 269 $new_array[$i] = $this->get_var(null,$x,$i); 270 } 271 return $new_array; 272 } 273 274 // ================================================================== 275 // Return the the query as a result set - see docs for more details 276 277 function get_results($query=null, $output = OBJECT){ 278 279 // Log how the function was called 280 $this->func_call = "\$db->get_results(\"$query\", $output)"; 281 282 // If there is a query then perform it if not then use cached results.. 283 if ( $query ) { 284 $this->query($query); 285 } 286 287 // Send back array of objects. Each row is an object 288 if ( $output == OBJECT ) { 289 return $this->last_result; 290 } elseif ( $output == ARRAY_A || $output == ARRAY_N ) { 291 if ( $this->last_result ) { 292 $i=0; 293 foreach( $this->last_result as $row ) { 294 $new_array[$i] = (array) $row; 295 if ( $output == ARRAY_N ) { 296 $new_array[$i] = array_values($new_array[$i]); 297 } 298 299 $i++; 300 } 301 302 return $new_array; 303 } else { 304 return null; 305 } 306 } 307 } 308 309 310 // ================================================================== 311 // Function to get column meta data info pertaining to the last query 312 // see docs for more info and usage 313 314 function get_col_info($info_type='name', $col_offset=-1) { 315 316 if ( $this->col_info ) { 317 if ( $col_offset == -1 ) { 318 $i=0; 319 foreach($this->col_info as $col ) { 320 $new_array[$i] = $col->{$info_type}; 321 $i++; 322 } 323 return $new_array; 324 } else { 325 return $this->col_info[$col_offset]->{$info_type}; 326 } 327 328 } 329 330 } 331 332 } 328 } 329 330 } 331 332 } 333 333 334 334 $wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
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