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File: qexec.php

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  Classes of Giulio Bai  >  Qexec  >  qexec.php  >  Download  
File: qexec.php
Role: Class source
Content type: text/plain
Description: Main class file, containing comments and examples
Class: Qexec
MySQL database access wrapper with many functions
Author: By
Last change:
Date: 8 years ago
Size: 4,971 bytes
 

Contents

Class file image Download
<?php

/**
 * Qexec - PHP Class to execute select queries safer and quicker, binding results
 *
 * Tested and working on PHP 4.3.2 and higher
 *
 * LICENSE: This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License v2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * @author Giulio Bai <slide.wow@gmail.com>
 * @copyright (C)2007 Giulio Bai - GNU GPL
 * @license http://www.gnu.org/licenses/gpl.html GNU General public License
 * @version 1.0
 * @link http://hewle.com/
 */
 

/**
 * A class to make queries safer and bindings quicker
 *
 * Example of use (1):
 * The following code will returns affected_rows for anything other than select's.
 * If you don't want any field name keys then specify 0 as the second parameter.
 * <code>
 * include_once('qexec.php');
 *
 * $q = new Qexec();
 * $res = $q->exec_query('SELECT foo,bar FROM table');
 *
 * echo $res[0]['foo']; // First row of the field 'foo'
 * </code>
 *
 * Example of use (2):
 * For a single field select, returns the value
 * <code>
 * include_once('qexec.php');
 *
 * $q = new Qexec();
 * $count = $q->exec_query('SELECT count(*) FROM table');
 * </code>
 *
 * @author Giulio Bai <slide.wow@gmail.com>
 * @copyright (C)2007 Giulio Bai
 * @license http://www.gnu.org/licenses/gpl.html GNU General Public License
 * @version 1.0
 * @link http://hewle.com
 */
 
class Qexec
{

   
/**
     * In case of error, this is the error message
     *
     * @var string
     */
   
var $error = 0;
   
    var
$link = mysql_connect('mysql_host', 'mysql_user', 'mysql_password'); // Enter your data here
   
   
    /**
     * Builds and returns the multiple array of results.
     * Found on http://it2.php.net/manual/en/function.mysql-query.php and
     * modified to match the class
     *
     * @param string $query the SELECT query to execute
     * @param bool $assoc want the result to be assoc?
     *
     * @return mixed the results, in a multi-array
     */
   
function exec_query($query, $assoc = 1)
    {
      
$query = parse_mysql_query($query);
      
      
$result = get_result($query);
      
       if (
$this->error !== 0) die($this->error); // Query not executed, due to errors
      
      
if( strtolower(substr($query, 0, 6)) != 'select' ) return array(mysql_affected_rows(), mysql_insert_id());
      
      
$count = @mysql_num_rows($result);
      
       if( !
$count ) return 0;
      
       if(
$count === 1) {
           if(
$assoc) $f = mysql_fetch_assoc($result);
           else
$f = mysql_fetch_row($result);
          
          
mysql_free_result($result);
          
           if(
count($f) === 1) {
               list(
$key) = array_keys($f);
                
               return
$f[$key];
           } else {
              
$all = array();
              
$all[] = $f;
              
               return
$all;
           }
       } else {
          
$all = array();
          
           for(
$i=0; $i<$count; $i++) {
               if(
$assoc ) $f = mysql_fetch_assoc($result);
               else
$f = mysql_fetch_row($r);
              
$all[] = $f;
           }
          
          
mysql_free_result($result);
          
           return
$all;
       }
    }
   
   
   
/**
     * Actually executes the query and return the result
     *
     * @param string $query the SELECT query to execute
     * @param bool $assoc want the result to be assoc?
     *
     * @return mixed the results, in a multi-array
     */
   
function get_result($query)
    {
       
$result = @mysql_query($query, $this->link);
          
        if(
mysql_errno()) {
           
$this->error = 'MYSQL ERROR #' . mysql_errno() . ' : ' . mysql_error() . '<br>' . $query '';
           
            return
0;
        }
       
       
$this->error = 0;
       
        return
$result;
    }

   
/**
     * AParses the query and connects to the db
     *
     * @param string $query the SELECT query to execute
     *
     * @return string the query, again, escaped
     */
   
function parse_mysql_query($query)
    {
        if(!
is_resource($this->link)) {
           
$this->error = "Failed to connect to the database. Please check your data.";
           
            return
0;
        }

       
$this->error = 0;
       
        return
mysql_real_escape_string($query);
    }

}

?>