Codice PHP:
<?
// ==================================================================
==================================================================
// ezSQL Constants
define("EZSQL_VERSION","1.01");
define("OBJECT","OBJECT",true);
define("ARRAY_A","ARRAY_A",true);
define("ARRAY_N","ARRAY_N",true);
// ==================================================================
// The Main Class
class db {
// ==================================================================
// DB Constructor - connects to the server and selects a database
function db($dbuser, $dbpassword, $dbname, $dbhost)
{
$this->dbh = @mysql_connect($dbhost,$dbuser,$dbpassword);
if ( ! $this->dbh )
{
$this->print_error("[list=1][b]Error establishing a database connection![/b][*]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?[/list]");
}
$this->select($dbname);
}
// ==================================================================
// Select a DB (if another one needs to be selected)
function select($db)
{
if ( !@mysql_select_db($db,$this->dbh))
{
$this->print_error("[list=1][b]Error selecting database <u>$db</u>![/b][*]Are you sure it exists?[*]Are you sure there is a valid database connection?[/list]");
}
}
// ==================================================================
// Print SQL/DB error.
function print_error($str = "")
{
if ( !$str ) $str = mysql_error();
// If there is an error then take note of it
print "<blockquote><font face=arial size=2 color=ff0000>";
print "[b]SQL/DB Error --[/b] ";
print "[<font color=000077>$str</font>]";
print "</font></blockquote>";
}
// ==================================================================
// Basic Query - see docs for more detail
function query($query, $output = OBJECT)
{
// Log how the function was called
$this->func_call = "\$db->query(\"$query\", $output)";
// Kill this
$this->last_result = null;
$this->col_info = null;
// 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 ( mysql_error() )
{
// If there is an error then take note of it..
$this->print_error();
return FALSE;
}
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;
$i++;
}
@mysql_free_result($this->result);
}
return TRUE;
}
}
// ==================================================================
//
function RecordCount ( $query )
{
return mysql_num_rows ( mysql_query ( $query ) );
}
// ==================================================================
//
function Mresult ( $query, $a, $b )
{
return mysql_result ( mysql_query ( $query ), $a, $b );
}
/**
* Correctly quotes a string so that all strings are escape coded.
*
* @param string the string to quote
* @param [magic_quotes] if $s is GET/POST var, set to get_magic_quotes_gpc().
*/
function qstr ( $string, $magic_quotes = false )
{
if (!$magic_quotes) {
if (strnatcmp(PHP_VERSION, '4.3.0') >= 0) {
return "'" . mysql_real_escape_string($string) . "'";
}
$string = str_replace("'", "\\'" , str_replace('\\', '\\\\', str_replace("\0", "\\\0", $string)));
return "'" . $string . "'";
}
return "'" . str_replace('\\"', '"', $string) . "'";
}
// ==================================================================
// Get one variable from the DB - see docs for more detail
function get_var($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 $values[$x]?$values[$x]:null;
}
// ==================================================================
// Get one row from the DB - see docs for more detail
function getRow($query=null,$y=0,$output=OBJECT)
{
// Log how the function was called
$this->func_call = "\$db->getRow(\"$query\",$y,$output)";
// 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
{
$this->print_error(" \$db->getRow(string query,int offset,output type) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N ");
}
}
// ==================================================================
// Function to get 1 column from the cached result set based in X index
// se docs for usage and info
function get_col($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 "<blockquote><font color=000090>";
echo "<pre><font face=arial>";
if ( ! $this->vardump_called )
{
echo "<font color=800080>[b]ezSQL[/b] (v".EZSQL_VERSION.") [b]Variable Dump..[/b]</font>\n\n";
}
print_r($mixed);
echo "\n\n[b]Last Query:[/b] ".($this->last_query?$this->last_query:"NULL")."\n";
echo "[b]Last Function Call:[/b] " . ($this->func_call?$this->func_call:"None")."\n";
echo "[b]Last Rows Returned:[/b] ".count($this->last_result)."\n";
echo "</font></pre></font></blockquote>";
echo "\n<hr size=1 noshade color=dddddd>";
$this->vardump_called = true;
}
// Alias for the above function
function dumpvars($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 "<blockquote>";
// Only show ezSQL credits once..
if ( ! $this->debug_called )
{
echo "<font color=800080 face=arial size=2>[b]ezSQL[/b] (v".EZSQL_VERSION.") [b]Debug..[/b]</font>
\n";
}
echo "<font face=arial size=2 color=000099>[b]Query --[/b] ";
echo "[<font color=000000>[b]$this->last_query[/b]</font>]</font>
";
echo "<font face=arial size=2 color=000099>[b]Query Result..[/b]</font>";
echo "<blockquote>";
if ( $this->col_info )
{
// =====================================================
// Results top rows
echo "<table cellpadding=5 cellspacing=1 bgcolor=555555>";
echo "<tr bgcolor=eeeeee><td nowrap valign=bottom><font color=555599 face=arial size=2>[b](row)[/b]</font></td>";
for ( $i=0; $i < count($this->col_info); $i++ )
{
echo "<td nowrap align=left valign=top><font size=1 color=555599 face=arial>{$this->col_info[$i]->type} {$this->col_info[$i]->max_length}
<font size=2>[b]{$this->col_info[$i]->name}[/b]</font></td>";
}
echo "</tr>";
// ======================================================
// print main results
if ( $this->last_result )
{
$i=0;
foreach ( $this->get_results(null,ARRAY_N) as $one_row )
{
$i++;
echo "<tr bgcolor=ffffff><td bgcolor=eeeeee nowrap align=middle><font size=2 color=555599 face=arial>$i</font></td>";
foreach ( $one_row as $item )
{
echo "<td nowrap><font face=arial size=2>$item</font></td>";
}
echo "</tr>";
}
} // if last result
else
{
echo "<tr bgcolor=ffffff><td colspan=".(count($this->col_info)+1)."><font face=arial size=2>No Results</font></td></tr>";
}
echo "</table>";
} // if col_info
else
{
echo "<font face=arial size=2>No Results</font>";
}
echo "</blockquote></blockquote><hr noshade color=dddddd size=1>";
$this->debug_called = true;
}
}
?>
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