Help to prevent double submit on refresh

Question

azegurb 1 Posting Whiz in Training

13 Years Ago

Hi all
I have one problem. I have created one little admin panel. and when i submitted a post and i refresh it again it automatically posts the post again. it posts as many as i click refresh. who can help me to eliminate this problem.
here is my problem.

<html><head>
	<meta http-equiv="content-type" content="text/html;charset=utf-8" />
	

	
	
</head>
<body>
<?php
include("../config/connect.php");
include("../config/resim.php");
$error = '';
$seher=$_POST['seher'];
$mezmun = $_POST['mezmun'];
$subyekt = $_POST['subyekt'];
$ish=$_POST['place'];
$date=date('Y-m-d');
$no=$_POST['no'];
$haber_kucuk_resim_klasor="../haber_kucuk"; // bu klasorleri acmayi unutmayin
$haber_buyuk_resim_klasor="../haber_buyuk"; // mutlaka bu iki klasore yazma izni vermelisiniz chmod 777
$buyuk_resim_en=640;
$buyuk_resim_boy=480;
$kucuk_resim_en=200;
$kucuk_resim_boy=150;	
if(isset($_POST['submit'])) {
if($mezmun == '' || $subyekt == '') {
$error .= 'A required field was left blank.<br />';
echo $error;
return false;
}
if(strlen($_FILES["resim"]["name"])>4)
{// eger resim varsa bu resmi turkce karakterlerden temizledikten sonra  
		 // resim ve  kucukresim olmak uzere iki tane resme donusturecegiz
		 // echo "resim devrede resim=$resim";
$bul=$_FILES["resim"] ;
$bulunacak = array('з','З','э','Э','р','Р','ь','ц','Ю','ю','Ц','Ь',',',' ','(',')','[',']'); 
$degistir  = array('c','C','i','I','g','G','u','o','S','s','O','U','','_','','','',''); 
$_FILES["resim"]=str_replace($bulunacak, $degistir, $bul); 
$resim = "$haber_buyuk_resim_klasor/".$_FILES["resim"]["name"]; 	   
move_uploaded_file($_FILES["resim"]["tmp_name"],$resim);
$kucukresim  = "$haber_kucuk_resim_klasor/".$_FILES["resim"]["name"];  
move_uploaded_file($_FILES["resim"]["tmp_name"],$kucukresim);
// kucuk resmi boyutlandiriyoruz
$icerik = resample($resim,$kucuk_resim_en,$kucuk_resim_boy); 
$dosya  = fopen ($kucukresim,"w+"); 
fwrite($dosya,$icerik); 
fclose($dosya); 
// buyuk resmi boyutlandiriyoruz
$icerik = resample($resim,$buyuk_resim_en,$buyuk_resim_boy); 
$dosya  = fopen ($resim,"w+"); 
fwrite($dosya,$icerik); 
fclose($dosya); 
// resim boyutlandirma bitti
}
if($error == '') {
mysql_query("INSERT INTO jobs VALUES('','$seher', '$mezmun', '$ish','$subyekt', '$date','')");
$mezmun=false;
$subyekt=false;
$date=false;
}
}
?>
<?
if(isset($_POST['duzelt'])){
//$no=$_POST['no'];
$sor=mysql_query("SELECT * FROM jobs where id='$no'");
while($res=mysql_fetch_row($sor)){
$no2=$res[0];
$mezmun2=$res[1];
$subyekt2=$res[2];
}
echo $no;
}
?>
<form name="list" action="" method="POST">

<table width="100%" class="mytable" border="">
			<tr bgcolor=#c0c0c0>
				<td></td><td>Şəhər</td><td>Vəzifənin adi</td><td>Sahə</td><td>İş yeri</td><td>Qoyulduqu Tarix</td></tr>	


<?
if(isset($_POST['show'])){
//$no=$_POST['no'];
 $res=mysql_query("select * from jobs where sekil='' ORDER BY id DESC");
	    
	    function daysDifference($endDate, $beginDate){   //explode the date by "-" and storing to array
		$date_parts1=explode("-", $beginDate);
		$date_parts2=explode("-", $endDate);   //gregoriantojd() Converts a Gregorian date to Julian Day Count
		$start_date=gregoriantojd($date_parts1[1], $date_parts1[2], $date_parts1[0]);
		$end_date=gregoriantojd($date_parts2[1], $date_parts2[2], $date_parts2[0]);
		return $end_date - $start_date;
		}
	    
		
			while($sor=mysql_fetch_row($res)){
				$id1=$sor[0];
				$seher=$sor[1];
				$sahe=$sor[2];
				$place=$sor[3];
				$vezife=$sor[4];
				$date=$sor[5];
				$datenow1=date('Y-m-d');
				$ferq=(int)daysDifference($datenow1,$date);
				if($ferq>1){
			
				echo "<tr class=\"row\" id=\"row1\" onmouseover=\"this.className='highlight'; current_row=1\" onmouseout=\"this.className='row'\">
				<td id=\"xana0\"><input type=\"checkbox\" id=\"checkbox[]\" name=\"checkbox[]\" value=\"$id1\"><input type=\"submit\" name=\"delete\" value=\"POZ\"></td><td id=\"xana0\">".$seher."</td><td width=330px id=\"xana1\"><a href='#' class=\"li\">".$vezife."</a></td><td width=170 id=\"xana1\">".$sahe."</td><td width=350 id=\"xana1\">".$place."</td><td id=\"xana2\">".$date."</td>
				</tr>";
				}
				else {
					
				echo "<tr class=\"row\" id=\"row1\" onmouseover=\"this.className='highlight'; current_row=1\" onmouseout=\"this.className='row'\">
				<td id=\"xana0\"><input type=\"checkbox\" id=\"checkbox[]\" name=\"checkbox[]\"  value=\"$id1\" ><input type=\"submit\" name=\"delete\" value=\"POZ\"></td><td id=\"xana1\">".$seher."</td><td width=330px id=\"xana1\"><a href='#' class=\"li\">".$vezife."</a></td><td width=170 id=\"xana1\">".$sahe."</td><td width=350 id=\"xana1\">".$place."</td><td  class=\"tarix\" id=\"xana2\">bu gun</td>
				</tr>";
				}	
					
					
				}
}
?>
<?

if(isset($_POST['delete'])){

	$checkbox=$_POST['checkbox']; //from name="checkbox[]"
	$countCheck=count($_POST['checkbox']);
	for($i=0;$i<$countCheck;$i++)
	{
$del_id=$checkbox[$i];
echo $del_id;

$sql = "DELETE from jobs where id=$del_id";
$result = mysql_query($sql);
}
if($result)
{
														
echo "successful delete";
}
else
{
echo "Error: ".mysql_error();
}
}

?>





</table>
</form>
<table>
<form name="enter" action="" method="POST" enctype="multipart/form-data">
<tr><td>Şəhər:</td><td><select name="seher" id="seher">
							<option default value=""></option>
							<option name="Baki" value="baki">Baki</option>
							<option name="Sumqayıt" value="sumqayıt">Sumqayıt</option>
							<option name="Gəncə" value="gəncə">Gəncə</option>
							<option name="Lənkəran" value="lənkəran">Lənkəran</option>
							<option name="Sabirabad" value="sabirabad">Sabirabad</option></select></td></tr>
<tr><td>Vezifenin adi:</td><td> <input type="text" name="subyekt" width="100" maxlength="100" value="<? echo $subyekt2; ?>"></td></tr>							
<tr><td>Sahe: </td><td><input type="text" name="mezmun" width="100" maxlength="50" value="<? echo $mezmun2; ?>"/></td></tr>

<tr><td>Iş yeri:</td><td> <input type="text" name="place" width="100" maxlength="100" value="<? echo $place2; ?>"></td></tr><br />
<tr><td>Sekil: </td><td><input type="file" name="resim" /></td></tr><br/>
<tr><td>News:</td><td>	<textarea name="news" cols="60" rows="6" class="Formstyles"></textarea></td></tr>
<tr><td><input class="Formstyles" name="submit" type="submit" value="Add" onClick="yoxla();"/>
<input class="Formstyles" name="duzelt" type="submit" value="deyis" /><td><input class="Formstyles" name="show" type="submit" value="goster" />
<input class="Formstyles" name="delete" id="delete" type="submit" value="poz" /></td></tr></td>
<tr><td>istedyini xeberi sec:</td><td>
<select name="no" id="no">
<OPTION SELECTED VALUE="">Select...</OPTION>
<?
$sorgu=mysql_query("SELECT * FROM jobs");
while($satir=mysql_fetch_array($sorgu))
{
echo "<option value='$satir[0]'>$satir[1]</option>";
}
  ?>
</select></td></tr></table>
</form></body>
</html>

thanks for attention

php

3 Contributors
4 Replies
113 Views
7 Hours Discussion Span
Latest Post 13 Years Ago Latest Post by azegurb

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chrishea 182 Nearly a Posting Virtuoso

13 Years Ago

There could be a more sophisticated way to check this but a simple way would be to set some session variables in the receiving module equal to your post variables (first time thru). On each call you check the session variables against the $_POST variables and if they are the same, you take no action and optionally issue a warning message.

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azegurb 1 Posting Whiz in Training · Answer 1 · 2010-12-19T00:02:23+00:00

Can you help me on my script if possible please. thank you very much

dietdew12z 8 Junior Poster · Answer 2 · 2010-12-19T01:10:36+00:00

While it's not a terribly elegant solution, I've had a lot of luck with this method.

call it testpost.php

<?php
if (isset($_POST['submit1']))
 {
 $var1=$_POST['var1'];
 $var2=$_POST['var2'];
 echo "Your information has been posted.";
 echo "<script>setTimeout(\"location.replace('testpost.php')\",2000)</script>";
 }
?>

<form action="testpost.php" method="post">
<input type="text" name="var1" /><br />
<input type="text" name="var2" /><br />
<input type="submit" name="submit1" value="SUBMIT" />
</form>

The reason I like this so well is that 1) You can have multiple forms and multiple submit buttons on one page, 2) You're using the same page to submit as you're using for the form, 3) Using the 2 second timeout allows you to let the user know the info has been posted, and 4) After 2 seconds the page reloads with no $_POST variables so if you refresh manually it won't post again.

I don't remember if I got the single/double and escaped quotes right, you'll have to test that for yourself.

azegurb 1 Posting Whiz in Training · Answer 3 · 2010-12-19T01:26:27+00:00

Thank you very much. i will test it. Thanks again for your attention.
and if i have another question around this can i ask?

Help to prevent double submit on refresh

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