php 5 probs :s

<?php
if(isset($_GET['function'])) {
  $function = $_GET['function'];
}
?>

<?php
if(isset($_GET['function'])) {
  $function = $_GET['function'];
}
?>

<?php
//Deze twee lijnen doen exact hetzelfde:
$variable = $variable . "htmlcode";
$variable .= "htmlcode";
?>

<?php
//Deze twee lijnen doen exact hetzelfde:
$variable = $variable . "htmlcode";
$variable .= "htmlcode";
?>

<?php
$variable = ''; // HIER DUS
$variable = $variable . "htmlcode";
?>

<?php
$variable = ''; // HIER DUS
$variable = $variable . "htmlcode";
?>

<?php
$variable  = '';
$variable .= "htmlcode";
?>

<?php
$variable  = '';
$variable .= "htmlcode";
?>

 
<?php
$asktables = mysql_query("SELECT * FROM home ORDER BY tabid DESC");
 while($obj = mysql_fetch_object($asktables)){
 $taboption = '';
 $taboption.='<option>'.htmlspecialchars($obj->tabnaam).'</option>';
?>

<?php
$asktables = mysql_query("SELECT * FROM home ORDER BY tabid DESC");
 while($obj = mysql_fetch_object($asktables)){
 $taboption = '';
 $taboption.='<option>'.htmlspecialchars($obj->tabnaam).'</option>';
?>

<?php
	# initialiseren van de variabele
	$sTabOption = '';
	
	# Ophalen van de rijen
	$qGetTables = mysql_query("SELECT `tabnaam`
							   FROM `home`
							   ORDER BY `tabid`
							   DESC");
							   
	# Uitlezen van de resultaten
	while ($aResult = mysql_fetch_assoc($qGetTables))
	{
		$sTabOption .= '<option>'.htmlspecialchars(stripslashes($aResult['tabnaam'])).'</option>';	
	}
	
	echo $sTabOption;
?>

<?php
	# initialiseren van de variabele
	$sTabOption = '';
 
	# Ophalen van de rijen
	$qGetTables = mysql_query("SELECT `tabnaam`
							   FROM `home`
							   ORDER BY `tabid`
							   DESC");
 
	# Uitlezen van de resultaten
	while ($aResult = mysql_fetch_assoc($qGetTables))
	{
		$sTabOption .= '<option>'.htmlspecialchars(stripslashes($aResult['tabnaam'])).'</option>';	
	}
 
	echo $sTabOption;
?>

<?php
ini_set("display_errors", 1);
error_reporting(E_ALL&~E_NOTICE);
?>

<?php
ini_set("display_errors", 1);
error_reporting(E_ALL&~E_NOTICE);
?>