<?php
/* =====================================================================================================================

	MySQL DATABASE ACCESS CLASS
		--> WRITTEN BY JYOT VAKHARIA. [Black iD Solutions(www.blackidsolutions.com)].
		--> Open Source GPL Lisence.
		--> VERSION 1.1 Release 1

		New
			--> Added the insert Method.
			--> Reduced the number of loops to make the class process faster and improve
				upon speed when database size is large.
			-->
===================================================================================================================== */

	class db
		{
			var $uname, $pass, $host, $db, $conn, $con_db;

			/* USEAGE : $db->connect('host','username','password','databasename');
						OR
						$db->connect(array('host','username','password','databasename'));
						OF
						$db->connect(array('host' => 'hostname', 'uname' => 'username', 'pass'=>'password', 'db'=>'db_name'));
			*/
			function connect()
				{
					$args = func_get_args();
					if(is_array($args[0]))
						$args = $args[0];
					if(!($this->uname) || !($this->host) || !($this->db))
						{
							// LOOK OUT FOR CONNECTION SETTINGS IF NOT DEFINED
							$this->host = $args['host'];
							$this->uname = $args['uname'];
							$this->pass = $args['pass'];
							$this->db = $args['db'];
						}
					if(!($this->uname) || !($this->host) || !($this->db))
						{
							// LOOK OUT FOR CONNECTION SETTINGS IF NOT DEFINED
							$this->host = $args[0];
							$this->uname = $args[1];
							$this->pass = $args[2];
							$this->db = $args[3];
						}
					$this->conn = mysql_connect($this->host,$this->uname, $this->pass) or die("Could not connect to the databae");
					$this->conn_db = mysql_select_db($this->db) or die("Could not select the database with the name " . $this->db);
					return $this->conn_db;
				}

			// USAGE $db->query($sql);
			// RETURNS THE RESULTANT DATASET.
			function query($sql)
				{
					return mysql_query($sql);
				}

			// USAGE $db->getFieldsFor('table');
			// RETURNS THE field name list as an array.
			function getFieldsFor($tablename)
				{
					$sql = "Select * From $tablename LIMIT 1";
					$fld = $this->getFieldsForSQL($sql);
					return $fld;
				}
			// USAGE $db->getFieldsForSQL("Select * from foo where bar='foo'");
			// RETURNS THE field name list as an array.
			function getFieldsForSQL($sql)
				{
					$db =  $this->query($sql);
					$i = 0;
					while($i < @mysql_num_fields($db))
						{
							$fld[] = mysql_field_name($db, $i);
							$i++;
						}
					mysql_free_result($db);
					return $fld;
				}
			// USAGE $db->table_array_from_tablename('table');
			// RETURNS THE aray containing the entire table as an array.
			// You can sort it as you like. It is currently keyed array.
			// To get a pirticular field use $tbl = $db->table_array_from_tablename('table'); $fld = $dbl[rowno]['fldname'];
			function table_array_from_tablename($tablename, $conds="1")
				{
					$sql = "Select * from $tablename WHERE $conds";
					$table = $this->table_array_from_sql($sql);
					return $table;
				}

			// USAGE $db->table_array_from_sql('Select * from tablename');
			// RETURNS THE aray containing the entire table as an array.
			// You can sort it as you like. It is currently keyed array.
			// To get a pirticular field use $tbl = $db->table_array_from_sql('table'); $fld = $dbl[rowno]['fldname'];
			function table_array_from_sql($sql)
				{
					$db = $this->query($sql);
					$flds = $this->getFieldsForSQL($sql);
					while($row = mysql_fetch_array($db,1))
						{
							$table[] = $row;
						}
					return $table;
				}
			function table_row_from_tablename($tablename, $conds="1")
				{
					$sql = "Select * from $tablename WHERE $conds";
					$table = $this->table_array_from_sql($sql);
					return $table[0];
				}

			// USAGE $db->table_array_from_sql('Select * from tablename');
			// RETURNS THE aray containing the entire table as an array.
			// You can sort it as you like. It is currently keyed array.
			// To get a pirticular field use $tbl = $db->table_array_from_sql('table'); $fld = $dbl[rowno]['fldname'];
			function table_row_from_sql($sql)
				{
					$row = $this->table_array_from_sql($sql);
					return $row[0];
				}

			function field_val_from_table($table, $field_name, $crit_field, $crit_val)
				{
					$sql = "Select $field_name from $table where $crit_field='$crit_val'";
					$res = $this->field_val_from_sql($sql);
					return $res;
				}
			function field_val_from_sql($sql)
				{
					$res = mysql_fetch_array($this->query($sql));
					return $res[0];
				}
			function flat_field_array($table, $field_name, $cond = " WHERE 1")
				{
					$sql = "SELECT $field_name FROM $table $cond";
					$res = $this->query($sql);
					while($row = mysql_fetch_array($res))
						{
							$arr[] = $row[$field_name];
						}
					return $arr;
				}

			function field_associative_array_from_table($tablename,$condition = "1",$fld_key,$fld_val,$val_seperator="-")
				{
					$tbl = $this->table_array_from_sql("SELECT $fld_key, $fld_val FROM $tablename WHERE $condition");
					$flds = explode(",",$fld_val);
					error_reporting(0);
					foreach($tbl as $row)
						{
							foreach($flds as $fld)
								{
									$row_val .= ($row_val!="") ? " $val_seperator {$row[$fld]}" : $row[$fld] ;
								}
							$retval[$row[$fld_key]] = $row_val;
							$row_val = "";
						}
					error_reporting(1);
					return $retval;
				}
			////////////////////////// USAGE /////////////////////////////////////////////
			//			$db->insert("tablename","field1=value1","field2=value2",...);   //
			//		$db->insert("tablename",array("field1=value1","field2=value2",...));//
			//		$db->insert("tablename","field1=value1;field2=value2;...");         //
			//////////////////////////////////////////////////////////////////////////////
			function insert()
				{
					$args = func_get_args();
					$first_arg = $args[0];
					if(!(is_array($first_arg)))
						$first_arg = split(";", $first_arg);
					$table = $first_arg[0];
					$opts = $first_arg[1];
					$opts = split(":",$opts);
					$ret_fld = $opts[1];
					$field_list = $this->getFieldsFor($table);
					if(is_array($args[1]))
						{
							$args = $args[1];
						}
					elseif(count($args) == 2)
						{
							$args = split(";", $args[1]);
						}
					else
						{
							$args = array_splice($args,1);
							foreach($args as $arg)
								{
									$temp_arg = split("=",$arg);
									$args2[$temp_arg[0]] = $temp_arg[1];
								}
							$args = $args2;
						}
					$flds = "";
					$vals = "";
					if(array_keys($args))
						{
							foreach($args as $fld=>$val)
								{
									if(in_array($fld,$field_list) && (!($_FILES['$fld']['name'])))
										{
									if(is_array($val))
										$val = join(";", $val);
									$flds .= $flds ? ","."`".$fld."`" : "`".$fld."`";
									$vals .= $vals ? ",'".$val."'" : "'".$val."'";
										}
								}
						}
					else
						{
							foreach($args as $arg)
								{
									$temp_arg = split("=",$arg);
									$fld = "`".$temp_arg[0]."`";
									if(in_array($fld,$field_list) && (!($_FILES['$fld']['name'])))
										{
									$val = str_replace("'","",$temp_arg[1]);
									$flds .= $flds ? ",".$fld : $fld;
									$vals .= $vals ? ",'".$val."'" : "'".$val."'";
										}
								}
						}
					$sql = "INSERT INTO $table ($flds) VALUES ($vals)";
					$this->query($sql);
					if(mysql_error())
						{
							return -1;
						}
					elseif($ret_fld)
						{
							$ret_sql = "Select " . str_replace("return","",str_replace("_","",$opts[0]))."($ret_fld) from $table";
							$ret_val = $this->field_val_from_sql($ret_sql);
							return $ret_val;
						}
				}

		////////////////////////// USAGE /////////////////////////////////////////////
			//			$db->update("tablename","updating condition","field1=value1","field2=value2",...);   //
			//		$db->update("tablename","updating condition",array("field1=value1","field2=value2",...));//
			//		$db->update("tablename","updating condition","field1=value1;field2=value2;...");         //
			//////////////////////////////////////////////////////////////////////////////
				function update()
				{
					$args = func_get_args();
					$first_arg = $args[0];
					$condition = $args[1];
					if(!(is_array($first_arg)))
						$first_arg = split(";", $first_arg);
					$table = $first_arg[0];
					$opts = $first_arg[1];
					$opts = split(":",$opts);
					$ret_fld = $opts[1];
					$field_list = $this->getFieldsFor($table);

					if(is_array($args[2]))
						{
							$args = $args[2];
						}
					elseif(count($args) == 2)
						{
							$args = split(";", $args[1]);
						}
					else
						{
							$args = array_splice($args,1);
							foreach($args as $arg)
								{
									$temp_arg = split("=",$arg);
									$args2[$temp_arg[0]] = $temp_arg[1];
								}
							$args = $args2;
						}
					$flds = "";
					$vals = "";
					if(array_keys($args))
						{
							foreach($args as $fld=>$val)
								{
									if(in_array($fld,$field_list) && (!($_FILES['$fld']['name'])))
										{
											if(is_array($val))
												$val = join(";", $val);
											$query .= ($query ? "," : "")."`$fld`='$val'";
										}

								}
						}
					else
						{
							foreach($args as $arg)
								{
									$temp_arg = split("=",$arg);
									$fld = $temp_arg[0];
									if(in_array($fld,$field_list) && (!($_FILES['$fld']['name'])))
										{

											$val = str_replace("'","",$temp_arg[1]);
		//									$flds .= $flds ? ",".$fld : $fld;
											$query .= ($query ? "," : "")."`$fld`='".addslashes($val)."'";
		//									$vals .= $vals ? ",'".$val."'" : "'".$val."'";
										}
								}
						}
					$sql = "UPDATE $table SET $query where $condition";
					$this->query($sql);
					echo mysql_error();
					if($ret_fld)
						{
							//$ret_sql = "Select " . str_replace("return","",str_replace("_","",$opts[0]))."($ret_fld) from $table";
							//$ret_val = $this->field_val_from_sql($ret_sql);
							//return $ret_val;
						}
				}

			// Function to replace a pirticular string in each row in all fields of the table.
		   	// created by binson  asif

	         function replace_string_in_entire_table($tablename,$fields,$existing_string,$replace_string)
			 {

			 		$flds= $this->getFieldsForSQL("SELECT $fields from $tablename");
					echo mysql_error();
					foreach($flds as $fld)
					{
						$sql="update $tablename set $fld = replace ($fld, '$existing_string', '$replace_string')";
						mysql_query($sql);
					}

			  		return mysql_error();
			 }

		}
?>