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<?php

/** A PHP class to access MySQL database with convenient methods

* in an object oriented way, and with a powerful debug system.\n

* Licence:  LGPL \n

* Web site: http://slaout.linux62.org/

* @version  1.0

* @author   S&eacute;bastien Lao&ucirc;t (slaout@linux62.org)

class DB

{

/** Put this variable to true if you want ALL queries to be debugged by default:

var $defaultDebug = false;

/** INTERNAL: The start time, in miliseconds.

var $mtStart;

/** INTERNAL: The number of executed queries.

var $nbQueries;

/** INTERNAL: The last result ressource of a query().

var $lastResult;

/** Connect to a MySQL database to be able to use the methods below.

function __construct($base, $server, $user, $pass)

{

$this->mtStart    = $this->getMicroTime();

$this->nbQueries  = 0;

$this->lastResult = NULL;
      $this->conn = NUll;

$this->conn =mysqli_connect($server, $user, $pass) or die('Server connection not possible.');
      $GLOBALS['conn'] = $this->conn;

mysqli_select_db($GLOBALS['conn'], $base)               or die('Database connection not possible.');

}
//Prepaired statement
function p_statement($mysqli, $query_string = "", $type = "", $vars = []) {

$query = $mysqli->prepare($query_string);
  $parameters = array();
  // push the type string into the array by reference
  $parameters[] = & $type;
  // push the items from $vars array into the array by reference
  for ($i = 0; $i < count($vars); $i++) {
      $parameters[] = & $vars[$i];
  }
  // call mysqli_stmt::bind_param with the $parameters array, which contains [type, var1, var2, ...]
  call_user_func_array(array($query, "bind_param"), $parameters);
  $query->execute();
  $result = null;
  preg_match("/^[a-zA-Z]+/", $query_string, $command);
  //echo strtoupper($command[0]);die;
  switch (strtoupper($command[0])) {
      case "SELECT":
          $result = $query->get_result();
          break;
      case "INSERT":
      case "UPDATE":
      case "DELETE":
          $result = $query->affected_rows;
          break;
  }
  $query->close();
  return $result;
}
function p_statement_query($mysqli, $query_string = "", $type = "", $vars = []) {

* @param $query The query.

* @param $debug If true, it output the query and the resulting table.

* @return The result of the query, to use with fetchNextObject().

function query($query, $debug = -1)

{

$this->nbQueries++;
      if (SHOW_QUERY_ERROR) {
      $this->lastResult = mysqli_query($GLOBALS['conn'],$query) or $this->debugAndDie($query);
      } else {
            $this->lastResult = mysqli_query($GLOBALS['conn'], $query);
      }

$this->debug($debug, $query, $this->lastResult);

return $this->lastResult;

}

/** Do the same as query() but do not return nor store result.\n

* Should be used for INSERT, UPDATE, DELETE...

* @param $query The query.

* @param $debug If true, it output the query and the resulting table.

function execute($query, $debug = -1)

{

$this->nbQueries++;

mysqli_query($GLOBALS['conn'],$query) or $this->debugAndDie($query);

$this->debug($debug, $query);

}

/** Convenient method for mysqli_fetch_object().

* @param $result The ressource returned by query(). If NULL, the last result returned by query() will be used.

* @return An object representing a data row.

function fetchNextObject($result = NULL)

{

if ($result == NULL)

$result = $this->lastResult;

if ($result == NULL || mysqli_num_rows($result) < 1)

return NULL;

else

return mysqli_fetch_object($result);

}

/** Get the number of rows of a query.

* @param $result The ressource returned by query(). If NULL, the last result returned by query() will be used.

* @return The number of rows of the query (0 or more).

function numRows($result = NULL)

{

if ($result == NULL)

return mysqli_num_rows($this->lastResult);

else

return mysqli_num_rows($result);

}

/** Get the result of the query as an object. The query should return a unique row.\n

* Note: no need to add "LIMIT 1" at the end of your query because

* the method will add that (for optimisation purpose).

* @param $query The query.

* @param $debug If true, it output the query and the resulting row.

* @return An object representing a data row (or NULL if result is empty).

function queryUniqueObject($query, $debug = -1)

{

$query = "$query LIMIT 1";

$this->nbQueries++;

$result = mysqli_query($GLOBALS['conn'],$query) or $this->debugAndDie($query);

$this->debug($debug, $query, $result);

return mysqli_fetch_object($result);

}

/** Get the result of the query as value. The query should return a unique cell.\n

* Note: no need to add "LIMIT 1" at the end of your query because

* the method will add that (for optimisation purpose).

* @param $query The query.

* @param $debug If true, it output the query and the resulting value.

* @return A value representing a data cell (or NULL if result is empty).

function queryUniqueValue($query, $debug = -1)

{

$query = "$query LIMIT 1";

$this->nbQueries++;

$result = mysqli_query($GLOBALS['conn'],$query) or $this->debugAndDie($query);

$line = mysqli_fetch_row($result);

$this->debug($debug, $query, $result);

return $line[0];

}

/** Get the maximum value of a column in a table, with a condition.

* @param $column The column where to compute the maximum.

* @param $table The table where to compute the maximum.

* @param $where The condition before to compute the maximum.

* @return The maximum value (or NULL if result is empty).

function maxOf($column, $table, $where)

{

return $this->queryUniqueValue("SELECT MAX(`$column`) FROM `$table` WHERE $where");

}

/** Get the maximum value of a column in a table.

* @param $column The column where to compute the maximum.

* @param $table The table where to compute the maximum.

* @return The maximum value (or NULL if result is empty).

function maxOfAll($column, $table)

{

return $this->queryUniqueValue("SELECT MAX(`$column`) FROM `$table`");

}

/** Get the count of rows in a table, with a condition.

* @param $table The table where to compute the number of rows.

* @param $where The condition before to compute the number or rows.

* @return The number of rows (0 or more).

function countOf($table, $where)

{

return $this->queryUniqueValue("SELECT COUNT(*) FROM `$table` WHERE $where");

}

/** Get the count of rows in a table.

* @param $table The table where to compute the number of rows.

* @return The number of rows (0 or more).

function countOfAll($table)

{

return $this->queryUniqueValue("SELECT COUNT(*) FROM `$table`");

}

/** Internal function to debug when MySQL encountered an error,

* even if debug is set to Off.

* @param $query The SQL query to echo before diying.

function debugAndDie($query)

{

$this->debugQuery($query, "Error");

die("<p style=\"margin: 2px;\">".mysqli_error($GLOBALS['conn'])."</p></div>");

}

/** Internal function to debug a MySQL query.\n

* Show the query and output the resulting table if not NULL.

* @param $debug The parameter passed to query() functions. Can be boolean or -1 (default).

* @param $query The SQL query to debug.

* @param $result The resulting table of the query, if available.

function debug($debug, $query, $result = NULL)

{

if ($debug === -1 && $this->defaultDebug === false)

return;

if ($debug === false)

return;

$reason = ($debug === -1 ? "Default Debug" : "Debug");

$this->debugQuery($query, $reason);

if ($result == NULL)

echo "<p style=\"margin: 2px;\">Number of affected rows: ".mysqli_affected_rows()."</p></div>";

else

$this->debugResult($result);

}

/** Internal function to output a query for debug purpose.\n

* Should be followed by a call to debugResult() or an echo of "</div>".

* @param $query The SQL query to debug.

* @param $reason The reason why this function is called: "Default Debug", "Debug" or "Error".

function debugQuery($query, $reason = "Debug")

{

$color = ($reason == "Error" ? "red" : "orange");

echo "<div style=\"border: solid $color 1px; margin: 2px;\">".

"<p style=\"margin: 0 0 2px 0; padding: 0; background-color: #DDF;\">".

"<strong style=\"padding: 0 3px; background-color: $color; color: white;\">$reason:</strong> ".

"<span style=\"font-family: monospace;\">".htmlentities($query)."</span></p>";

}

/** Internal function to output a table representing the result of a query, for debug purpose.\n

* Should be preceded by a call to debugQuery().

* @param $result The resulting table of the query.

function debugResult($result)

{

echo "<table border=\"1\" style=\"margin: 2px;\">".

"<thead style=\"font-size: 80%\">";

$numFields = mysqli_num_fields($result);

// BEGIN HEADER

$tables    = array();

$nbTables  = -1;

$lastTable = "";

$fields    = array();

$nbFields  = -1;

while ($column = mysqli_fetch_field($result)) {

if ($column->table != $lastTable) {

$nbTables++;

$tables[$nbTables] = array("name" => $column->table, "count" => 1);

} else

$tables[$nbTables]["count"]++;

$lastTable = $column->table;

$nbFields++;

$fields[$nbFields] = $column->name;

}

for ($i = 0; $i <= $nbTables; $i++)

echo "<th colspan=".$tables[$i]["count"].">".$tables[$i]["name"]."</th>";

echo "</thead>";

echo "<thead style=\"font-size: 80%\">";

for ($i = 0; $i <= $nbFields; $i++)

echo "<th>".$fields[$i]."</th>";

echo "</thead>";

// END HEADER

while ($row = mysqli_fetch_array($result)) {

echo "<tr>";

for ($i = 0; $i < $numFields; $i++)

echo "<td>".htmlentities($row[$i])."</td>";

echo "</tr>";

}

echo "</table></div>";

$this->resetFetch($result);

}

/** Get how many time the script took from the begin of this object.

* @return The script execution time in seconds since the

* creation of this object.

function getExecTime()

{

return round(($this->getMicroTime() - $this->mtStart) * 1000) / 1000;

}

function parseValue($val) {

return mysqli_real_escape_string($GLOBALS['conn'],stripslashes($val));

}

/** Get the number of queries executed from the begin of this object.

* @return The number of queries executed on the database server since the

* creation of this object.

function getQueriesCount()

{

return $this->nbQueries;

}

/** Go back to the first element of the result line.

* @param $result The resssource returned by a query() function.

function resetFetch($result)

{

if (mysqli_num_rows($result) > 0)

mysqli_data_seek($result, 0);

}

/** Get the id of the very last inserted row.

* @return The id of the very last inserted row (in any table).

function lastInsertedId()

{

return mysqli_insert_id($GLOBALS['conn']);

}

/** Close the connexion with the database server.\n

* It's usually unneeded since PHP do it automatically at script end.

function close()

{

mysqli_close();

}

/** Internal method to get the current time.

* @return The current time in seconds with microseconds (in float format).

function getMicroTime()

{

list($msec, $sec) = explode(' ', microtime());

return floor($sec / 1000) + $msec;

}
    /** method to all sql result.*/
    function fetchAllObject($sql)
    {
      while($result=mysqli_fetch_assoc($sql)) {
        $rsArr[]=$result;
      }
      return ($rsArr);
    }
	/*function cleanReqStr($string) {
		   //$string = str_replace(' ', '-', $string); // Replaces all spaces with hyphens.
           $string = trim($string);
		   return preg_replace('/[^A-Za-z0-9\-]/', '', $string); // Removes special chars.
	}*/
	function cleanReqStr($val) {
		
	$string =  preg_replace('/[^A-Za-z0-9\-]/', '', $val); // Removes special chars.
    return mysqli_real_escape_string($GLOBALS['conn'],strip_tags(trim($string)));
    }
	
  } // class DB

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