git.dj3c1t.com Git - mtweb/blob - mw/app/data/impl/mw_mysql.php

   1 <?php
   2
   3   class mw_mysql{
   4
   5     var $link;
   6
   7     var $host;
   8     var $base;
   9     var $user;
  10     var $password;
  11
  12     var $EXTENTION_OK;
  13
  14     function extention_ok(&$env) { return $this->EXTENTION_OK; }
  15
  16     function mw_mysql($host, $base, $user, $password){
  17       $this->host = $host;
  18       $this->base = $base;
  19       $this->user = $user;
  20       $this->password = $password;
  21       $this->EXTENTION_OK = function_exists("mysql_connect");
  22     }
  23
  24     function connect($host, $base, $user, $password){
  25       $this->link = @mysql_connect($host, $user, $password);
  26       if(!$this->link) throw new Exception($this->exception_out("Impossible d'etablir une connection au serveur"));
  27       @mysql_query("SET NAMES 'utf8'");
  28       if($base){
  29         $connected = @mysql_select_db($base, $this->link);
  30         if(!$connected) throw new Exception($this->exception_out("Impossible de selectioner la base ".$base));
  31       }
  32       return true;
  33     }
  34
  35     function select_db($db_name){\r
  36       $this->base = $db_name;\r
  37       if(!$this->link) $this->connect($this->host, $this->base, $this->user, $this->password);\r
  38       return $this->query("USE ".$db_name);\r
  39     }
  40
  41     function table_exists($table){\r
  42       if(!$this->link) $this->connect($this->host, $this->base, $this->user, $this->password);\r
  43       $rst = $this->query("SHOW TABLES");\r
  44       while($v_rst = mysql_fetch_array($rst)){\r
  45         if(strcmp($v_rst[0], $table) == 0) return true;\r
  46       }\r
  47       mysql_free_result($rst);\r
  48       return false;\r
  49     }
  50
  51     function field_exists($table_name, $field_name){
  52       if(!$this->link) $this->connect($this->host, $this->base, $this->user, $this->password);
  53       $sql = "SHOW COLUMNS FROM `".$table_name."` LIKE ".$field_name;
  54       $rst = $this->query($sql);
  55       $exists = false;
  56       $v_rst = $this->fetch_assoc($rst);
  57       if($v_rst) $exists = true;
  58       $this->free_result($rst);
  59       return $exists;
  60     }
  61
  62     function query($query_string){\r
  63       if(!$this->link) $this->connect($this->host, $this->base, $this->user, $this->password);\r
  64       $result = @mysql_query($query_string, $this->link);\r
  65       if(!$result) throw new Exception($this->exception_out("Syntaxe invalide dans une requete"));\r
  66       return $result;\r
  67     }
  68
  69     function fetch_assoc($rst){
  70       if($this->link){
  71         if($rst){
  72           return mysql_fetch_assoc($rst);
  73         }
  74         else throw new Exception($this->exception_out("fetch_assoc sans result handler"));
  75       }
  76       else throw new Exception($this->exception_out("fetch_assoc sans connexion"));
  77     }
  78
  79     function insert_id(){
  80       if($this->link){
  81         return mysql_insert_id($this->link);
  82       }
  83       else throw new Exception($this->exception_out("insert_id sans connexion"));
  84     }
  85
  86     function free_result($rst){
  87       if($this->link){
  88         if($rst){
  89           return mysql_free_result($rst);
  90         }
  91         else throw new Exception($this->exception_out("free_result sans result handler"));
  92       }
  93       else throw new Exception($this->exception_out("free_result sans connexion"));
  94     }
  95
  96     function close(){
  97       if($this->link) return mysql_close($this->link);
  98       return true;
  99     }
 100
 101     function exception_out($message){\r
 102       return "[erreur] mysql : ".$message;\r
 103     }
 104
 105   }
 106
 107 ?>