PHPDBI: PHP MySQL Database Interface

<?php

/*
PHP MySQL DataBase Interface - phpdbi
v1.0 2001/07/12
Copyright(c) 2001 Chin-pang LI, Joe
*/

class DBI {
	// properties
	var $dbh = FALSE;
	var $dbi_debug = TRUE;
	var $err = 0;
	var $errstr = "";
	// methods
	function update_state() {
		$this->err = @mysql_errno();
		$this->errstr = @mysql_errstr();
	}	
	function connect($dbname, $hostname = "localhost", $username = "", $password = "") {
		$bdd = FALSE;
		if ($this->dbi_debug) {
			$this->dbh = mysql_connect($hostname, $username, $password);
		} else {
			$this->dbh = @mysql_connect($hostname, $username, $password);
		}
		$this->update_state();
		if ($this->dbh) {
			if ($this->dbi_debug) {
				$bdd = mysql_select_db($dbname, $this->dbh);
			} else {
				$bdd = @mysql_select_db($dbname, $this->dbh);
			}
			$this->update_state();
			if ($bdd) {
				return $this->dbh;
			} else {
				die($this->errstr);
			}
		} else {
			die($this->errstr);
		}
	}
	function execute($statement) {
		$id = FALSE;
		if ($this->dbi_debug) {
			$id = mysql_query($statement);
		} else {
			$id = @mysql_query($statement);
		}
		$this->update_state();
		return $id;
	}
	function finish($sth) {
		$bdd = FALSE;
		$i = 0;
		$temp = array();
		if ($sth > 0) {
			if ($this->dbi_debug) {
				$bdd = mysql_free_result($sth);
			} else {
				$bdd = @mysql_free_result($sth);
			}
			$this->update_state();
		}
		return ($bdd != FALSE);
	}
	function dosql($statement) {
		$sth = $this->execute($statement);
		$nrows = -1;
		if ($sth) {
			if ($this->dbi_debug) {
				$nrows = mysql_affected_rows($sth);
			} else {
				$nrows = @mysql_affected_rows($sth);
			}
		}
		$this->update_state();
		$this->finish($sth);
		return $nrows;
	}
	function fetchrow_hash($sth) {
		$ret = array();
		if ($sth > 0) {
			if ($this->dbi_debug) {
				$ret = mysql_fetch_array($sth);
			} else {
				$ret = @mysql_fetch_array($sth);
			}
			$this->update_state();
		}
		return $ret;
	}
	function fetchrow_array($sth) {
		$ret = array();
		if ($sth > 0) {
			if ($this->dbi_debug) {
				$ret = mysql_fetch_row($sth);
			} else {
				$ret = @mysql_fetch_row($sth);
			}
			$this->update_state();
		}
		return $ret;
	}
	function fetchrow_object($sth) {
		$ret = array();
		if ($sth > 0) {
			if ($this->dbi_debug) {
				$ret = mysql_fetch_object($sth);
			} else {
				$ret = @mysql_fetch_object($sth);
			}
			$this->update_state();
		}
		return $ret;
	}
	function fetchall_array($sth) {
		$ret = array();
		$temp = array();
		if ($sth > 0) {
			if ($this->dbi_debug) {
				while ($temp = mysql_fetch_row($sth)) {
					$ret[] = $temp;
				}
			} else {
				while ($temp = @mysql_fetch_row($sth)) {
					$ret[] = $temp;
				}
			}
			$this->update_state();
		}
		return $ret;
	}
	function fetchall_hash($sth) {
		$ret = array();
		$temp = array();
		if ($sth > 0) {
			if ($this->dbi_debug) {
				while ($temp = mysql_fetch_array($sth)) {
					$ret[] = $temp;
				}
			} else {
				while ($temp = @mysql_fetch_array($sth)) {
					$ret[] = $temp;
				}
			}
			$this->update_state();
		}
		return $ret;
	}
	function rows($sth) {
		$ret = 0;
		if ($sth > 0) {
			if ($this->dbi_debug) {
				$ret = mysql_num_rows($sth);
			} else {
				$ret = @mysql_num_rows($sth);
			}
			$this->update_state();
		}
		return $ret;
	}
	function commit($sth) {
		return ($this->dosql("commit;") >= 0);
	}
	function rollback($sth) {
		return ($this->dosql("rollback;") >= 0);
	}
	function quote($string) {
		return @mysql_escape_string($string);
	}
	function err() {
		return $this->err;
	}
	function errstr() {
		return $this->errstr;
	}
	function disconnect() {
		$bdd = FALSE;
		if ($this->dbi_debug) {
			$bdd = mysql_close($this->dbh);
		} else {
			$bdd = @mysql_close($this->dbh);
		}
		$this->update_state();
		return ($bdd != FALSE);
	}
	function selectrow_array($statement) {
		$ret = array();
		$sth = $this->execute($statement);
		$ret = $this->fetchrow_array($sth);
		$this->finish($sth);
		return $ret;	
	}
	function selectrow_hash($statement) {
		$ret = array();
		$sth = $this->execute($statement);
		$ret = $this->fetchrow_hash($sth);
		$this->finish($sth);
		return $ret;	
	}
	function selectrow_object($statement) {
		$ret = array();
		$sth = $this->execute($statement);
		$ret = $this->fetchrow_object($sth);
		$this->finish($sth);
		return $ret;	
	}
	function selectall_array($statement) {
		$ret = array();
		$sth = $this->execute($statement);
		$ret = $this->fetchall_array($sth);
		$this->finish($sth);
		return $ret;	
	}
	function selectall_hash($statement) {
		$ret = array();
		$sth = $this->execute($statement);
		$ret = $this->fetchall_hash($sth);
		$this->finish($sth);
		return $ret;	
	}
	function insert_id() {
		$ret = -1;
		if ($this->dbh) {
			if ($this->dbi_debug) {
				$ret = mysql_insert_id($this->dbh);
			} else {
				$ret = @mysql_insert_id($this->dbh);
			}
			$this->update_state();
		}
		return $ret;
	}
}
?>