// ==================================================================
// Author: Justin Vincent (justin
// Web: http://php.justinvincent.com
// Name: ezSQL
// Desc: Class to make it very easy to deal with mySQL database connections.
//
// !! IMPORTANT !!
//
// Please send me a mail telling me what you think of ezSQL
// and what your using it for!! Cheers. [ justin
//
// ==================================================================
// user database settings
define("EZSQL_DB_PASSWORD", "");
define("EZSQL_DB_NAME", "test");
define("EZSQL_DB_HOST", ""); // end of user database settings
// ==================================================================
// ezSQL Constants
define("EZSQL_VERSION", "1.18");
define("OBJECT", "OBJECT", true);
define("ARRAY_A", "ARRAY_A", true);
define("ARRAY_N", "ARRAY_N", true);
// ==================================================================
// The Main Class
class stp_db {
var $debug_called;
var $vardump_called;
var $show_errors = true;
// ==================================================================
// DB Constructor - connects to the server and selects a database
function stp_db($dbuser, $dbpassword, $dbname, $dbhost)
{
$this->dbh = @mysql_connect($dbhost, $dbuser, $dbpassword);
if ( ! $this->dbh )
{
$this->print_error("
- Error establishing a database connection!
- Are you sure you have the correct user/password?
- Are you sure that you have typed the correct hostname?
- Are you sure that the database server is running?
}
$this->select($dbname);
}
// ==================================================================
// Select a DB (if another one needs to be selected)
function select($db)
{
if ( !@mysql_select_db($db, $this->dbh))
{
$this->print_error("
- Error selecting database $db!
- Are you sure it exists?
- Are you sure there is a valid database connection?
}
}
// ====================================================================
// Format a string correctly for safe insert under all PHP conditions
function escape($str)
{
return mysql_escape_string(stripslashes($str));
}
// ==================================================================
// Print SQL/DB error.
function print_error($str = "")
{
// All erros go to the global error array $EZSQL_ERROR..
global $EZSQL_ERROR;
// If no special error string then use mysql default..
if ( !$str ) $str = mysql_error();
// Log this error to the global array..
$EZSQL_ERROR[] = array
(
"query" => $this->last_query,
"error_str" => $str
);
// Is error output turned on or not..
if ( $this->show_errors )
{
// If there is an error then take note of it
print "
";";
print "SQL/DB Error -- ";
print "[$str]";
print "
/*
global $PHP_SELF;
$sqllog = fopen('sqllog', 'a');
fwrite($sqllog, "\n\n----\n");
fwrite($sqllog, $this->last_query."\n");
fwrite($sqllog, $PHP_SELF."\n");
fclose($sqllog);
*/
}
else
{
return false;
}
}
// ==================================================================
// Turn error handling on or off..
function show_errors()
{
$this->show_errors = true;
}
function hide_errors()
{
$this->show_errors = false;
}
// ==================================================================
// Kill cached query results
function flush()
{
// Get rid of these
$this->last_result = null;
$this->col_info = null;
$this->last_query = null;
}
// ==================================================================
// Basic Query - see docs for more detail
function query($query)
{
// Flush cached values..
$this->flush();
// Log how the function was called
$this->func_call = "\$db->query(\"$query\")";
// Keep track of the last query for debug..
$this->last_query = $query;
// Perform the query via std mysql_query function..
$this->result = mysql_query($query, $this->dbh);
// If there was an insert, delete or update see how many rows were affected
// (Also, If there there was an insert take note of the insert_id
$query_type = array("insert", "delete", "update");
// loop through the above array
foreach ( $query_type as $word )
{
// This is true if the query starts with insert, delete or update
if ( preg_match("/$word /i", $query) )
{
$this->rows_affected = mysql_affected_rows();
// This gets the insert ID
if ( $word == "insert" )
{
$this->insert_id = mysql_insert_id($this->dbh);
}
$this->result = false;
}
}
if ( mysql_error() )
{
// If there is an error then take note of it..
$this->print_error();
}
else
{
// In other words if this was a select statement..
if ( $this->result )
{
// =======================================================
// Take note of column info
$i=0;
while ($i < @mysql_num_fields($this->result))
{
$this->col_info[$i] = @mysql_fetch_field($this->result);
$i++;
}
// =======================================================
// Store Query Results
$i=0;
while ( $row = @mysql_fetch_object($this->result) )
{
// Store relults as an objects within main array
$this->last_result[$i] = $row;
$i++;
}
// Log number of rows the query returned
$this->num_rows = $i;
@mysql_free_result($this->result);
// If there were results then return true for $db->query
if ( $i )
{
return true;
}
else
{
return false;
}
}
else
{
// Update insert etc. was good..
return true;
}
}
}
// ==================================================================
// Get one variable from the DB - see docs for more detail
function get_var($query=null, $x=0, $y=0)
{
// Log how the function was called
$this->func_call = "\$db->get_var(\"$query\", $x, $y)";
// If there is a query then perform it if not then use cached results..
if ( $query )
{
$this->query($query);
}
// Extract var out of cached results based x, y vals
if ( $this->last_result[$y] )
{
$values = array_values(get_object_vars($this->last_result[$y]));
}
// If there is a value return it else return null
return (isset($values[$x]) && $values[$x]!=='')?$values[$x]:null;
}
// ==================================================================
// Get one row from the DB - see docs for more detail
function get_row($query=null, $output=OBJECT, $y=0)
{
// Log how the function was called
$this->func_call = "\$db->get_row(\"$query\", $output, $y)";
// If there is a query then perform it if not then use cached results..
if ( $query )
{
$this->query($query);
}
// If the output is an object then return object using the row offset..
if ( $output == OBJECT )
{
return $this->last_result[$y]?$this->last_result[$y]:null;
}
// If the output is an associative array then return row as such..
elseif ( $output == ARRAY_A )
{
return $this->last_result[$y]?get_object_vars($this->last_result[$y]):null;
}
// If the output is an numerical array then return row as such..
elseif ( $output == ARRAY_N )
{
return $this->last_result[$y]?array_values(get_object_vars($this->last_result[$y])):null;
}
// If invalid output type was specified..
else
{
$this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N");
}
}
// ==================================================================
// Function to get 1 column from the cached result set based in X index
// se docs for usage and info
function get_col($query=null, $x=0)
{
// If there is a query then perform it if not then use cached results..
if ( $query )
{
$this->query($query);
}
// Extract the column values
for ( $i=0; $i < count($this->last_result); $i++ )
{
$new_array[$i] = $this->get_var(null, $x, $i);
}
return $new_array;
}
// ==================================================================
// Return the the query as a result set - see docs for more details
function get_results($query=null, $output = OBJECT)
{
// Log how the function was called
$this->func_call = "\$db->get_results(\"$query\", $output)";
// If there is a query then perform it if not then use cached results..
if ( $query )
{
$this->query($query);
}
// Send back array of objects. Each row is an object
if ( $output == OBJECT )
{
return $this->last_result;
}
elseif ( $output == ARRAY_A || $output == ARRAY_N )
{
if ( $this->last_result )
{
$i=0;
foreach( $this->last_result as $row )
{
$new_array[$i] = get_object_vars($row);
if ( $output == ARRAY_N )
{
$new_array[$i] = array_values($new_array[$i]);
}
$i++;
}
return $new_array;
}
else
{
return null;
}
}
}
// ==================================================================
// Function to get column meta data info pertaining to the last query
// see docs for more info and usage
function get_col_info($info_type="name", $col_offset=-1)
{
if ( $this->col_info )
{
if ( $col_offset == -1 )
{
$i=0;
foreach($this->col_info as $col )
{
$new_array[$i] = $col->{$info_type};
$i++;
}
return $new_array;
}
else
{
return $this->col_info[$col_offset]->{$info_type};
}
}
}
// ==================================================================
// Dumps the contents of any input variable to screen in a nicely
// formatted and easy to understand way - any type: Object, Var or Array
function vardump($mixed)
{
echo "
";If ezSQL has helped you why not make a donation!?";
echo ""; if ( ! $this->vardump_called ) { echo "ezSQL (v".EZSQL_VERSION.") Variable Dump..\n\n"; } $var_type = gettype ($mixed); print_r(($mixed?$mixed:"No Value / False")); echo "\n\nType: " . ucfirst($var_type) . "\n"; echo "Last Query: ".($this->last_query?$this->last_query:"NULL")."\n"; echo "Last Function Call: " . ($this->func_call?$this->func_call:"None")."\n"; echo "Last Rows Returned: ".count($this->last_result)."\n"; echo "
echo "\n
";
$this->vardump_called = true;
}
// Alias for the above function
function dumpvar($mixed)
{
$this->vardump($mixed);
}
// ==================================================================
// Displays the last query string that was sent to the database & a
// table listing results (if there were any).
// (abstracted into a seperate file to save server overhead).
function debug()
{
echo "
";$item";
// Only show ezSQL credits once..
if ( ! $this->debug_called )
{
echo "ezSQL (v".EZSQL_VERSION.") Debug..\n";
}
echo "Query -- ";
echo "[$this->last_query]";
echo "Query Result..";
echo "";{$this->col_info[$i]->type} {$this->col_info[$i]->max_length}
if ( $this->col_info )
{
// =====================================================
// Results top rows
echo ""
;
echo "; (row)"
for ( $i=0; $i < count($this->col_info); $i++ )
{
echo "
{$this->col_info[$i]->name}";
}
echo "";
// ======================================================
// print main results
if ( $this->last_result )
{
$i=0;
foreach ( $this->get_results(null, ARRAY_N) as $one_row )
{
$i++;
echo "$i";
foreach ( $one_row as $item )
{
echo "
}
echo "";
}
} // if last result
else
{
echo "
}
echo "";
} // if col_info
else
{
echo "No Results";
}
echo "If ezSQL has helped you why not make a donation!?
";
$this->debug_called = true;
}
function get_cache($query = '', $refresh_rate = 600) {
$fname = md5(strtolower($query));
$filename = CACHE_PATH . '/' . $fname;
global $cache_log;
if (file_exists($filename)) {
$cache_timestamp = filemtime($filename);
$timediff = time() - $cache_timestamp;
} else {
$no_file = 1;
}
if ($no_file || $query && ($timediff > $refresh_rate)) {
$results_array = $this->get_results($query);
if (!mysql_error()) {
$array_s = serialize($results_array);
$file = fopen($filename, 'w');
fwrite($file, $array_s);
fclose($file);
}
$cache_log[] = "$fname
".htmlspecialchars($query)."";
return $results_array;
} else {
$flen = filesize($filename);
$file = fopen($filename, 'r');
$results_array = fread($file, $flen);
fclose($file);
$cache_log[] = "$fname
".htmlspecialchars($query)."";
return unserialize($results_array);
}
}
}
$db = new stp_db(EZSQL_DB_USER, EZSQL_DB_PASSWORD, EZSQL_DB_NAME, EZSQL_DB_HOST);
?>
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