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Loop to insert data into mysql table

Posted on 2010-08-22
20
Medium Priority
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Last Modified: 2013-12-13
I have some values in post like:

$ob1=$_POST['ob1'];
$ob2=$_POST['ob2'];
$ob3=$_POST['ob3'];
----------------------upto 30-----------
$ob50=$_POST['ob50'];

first i want to add loop to make code short.

now i use code to insert these value to table:


$query1= mysql_query("INSERT INTO squestions(obno, ucode)
VALUES
('$ob1','$testcode')");


$query2= mysql_query("INSERT INTO squestions(obno, ucode)
VALUES
('$ob2','$testcode')");


$query3= mysql_query("INSERT INTO squestions(obno, ucode)
VALUES
('$ob3','$testcode')");


-------------upto 50 queries----------------


$query50= mysql_query("INSERT INTO squestions(obno, ucode)
VALUES
('$ob50','$testcode')");


Please help me ,
how to add loop for this?





0
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Question by:savsoft
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20 Comments
 
LVL 9

Expert Comment

by:Snarfles
ID: 33497990

for ( $counter = 1; $counter <= 50; $counter++) {
$ob=$_POST['ob$counter'];
mysql_query("INSERT INTO squestions(obno, ucode)
VALUES
('$ob','$testcode')");

}

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0
 
LVL 9

Expert Comment

by:Snarfles
ID: 33497993
Oh hang on... 'up to 50'... means a little change to check

Also I'm making the assumption $testcode is declared further up and is always the same?
for ( $counter = 1; $counter <= 50; $counter++) {
if (isset($_POST['ob$counter'])){
$ob=$_POST['ob$counter'];
mysql_query("INSERT INTO squestions(obno, ucode)
VALUES
('$ob','$testcode')");
}
}

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0
 
LVL 9

Expert Comment

by:Snarfles
ID: 33497997
Actually to be honest 50 post variables is a lot... you would probably be better off passing a string which you can then explode into an array... not sure if thats going to work for your code or not... but something to think about.
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LVL 58

Expert Comment

by:cyberkiwi
ID: 33498012
Snarfies, borrowing your code..

I tend to use the below. isset only tests if the var is set, as long as the POST var is in the form, and it is an empty string, isset still returns true.
for ( $counter = 1; $counter <= 50; $counter++)
{
  if ($_POST['ob$counter']>'')
  {
    $ob=$_POST['ob$counter'];
    mysql_query("INSERT INTO squestions(obno, ucode)
      VALUES ('$ob','$testcode')");
  }
}

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0
 

Author Comment

by:savsoft
ID: 33498013
can you help me to make this code by using array?
0
 

Author Comment

by:savsoft
ID: 33498044
i have try above codes but it doesn't insert data...
0
 
LVL 8

Expert Comment

by:kumaranmca
ID: 33498047
I found the good solution of Mysql query...

Try my the below code...to solve your needs...


for($i=0;$i<=50;$i++){
      $values.="('".$ob.$i."','".$testcode."')";
}
echo $values;
INSERT INTO squestions(obno, ucode) VALUES $values
0
 
LVL 8

Expert Comment

by:kumaranmca
ID: 33498053
   mysql_query("INSERT INTO squestions(obno, ucode) VALUES ".$values.");
0
 
LVL 9

Expert Comment

by:Snarfles
ID: 33498059
savsoft do this

echo $query = "INSERT INTO squestions(obno, ucode)
      VALUES ('$ob','$testcode')";
echo "<br />";
mysql_query($query);

and tell me if it spits out the correct queries.
0
 
LVL 9

Expert Comment

by:Snarfles
ID: 33498061
The above 3 lines replaces the single line

mysql_query("INSERT INTO squestions(obno, ucode)
      VALUES ('$ob','$testcode')");
0
 

Author Comment

by:savsoft
ID: 33498073
yes it insert value of $testcode but leave empty value of $ob
0
 
LVL 8

Expert Comment

by:kumaranmca
ID: 33498127
to assign the value first

$ob='1';
$ob1='2';
$ob2='3';
....
$ob50='50';

then execute my code...its work
0
 

Author Comment

by:savsoft
ID: 33498143
sorry kumaranmca,

i have also tried your code its not work
0
 
LVL 9

Accepted Solution

by:
Snarfles earned 2000 total points
ID: 33498172
Sorry I've given you a bit of a bum steer.

'ob'.$counter not 'ob$counter'
for ( $counter = 1; $counter <= 50; $counter++)
{
  if ($_POST['ob'.$counter]>'')
  {
    $ob=$_POST['ob'.$counter];
    mysql_query("INSERT INTO squestions(obno, ucode)
      VALUES ('$ob','$testcode')");
  }
}

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0
 
LVL 84

Expert Comment

by:Dave Baldwin
ID: 33498183
Is the number of $_POST['ob_'] variables the same each time or different?  Do you already have the code to connect to the server and select the database?  How are you testing whether it works or not?
0
 

Author Comment

by:savsoft
ID: 33498205
yes, Snarfles
its work,
Thank you for your great help.
can you help me litle more?

if i changed above code to:

$nob=$_POST['nob'];

for ( $counter = 1; $counter <= $nob; $counter++)
{
  if ($_POST['ob'.$counter]>'')
  {
    $ob=$_POST['ob'.$counter];
    mysql_query("INSERT INTO squestions(obno, ucode)
      VALUES ('$ob','$testcode')");
  }
}

its not work if i replaced 50 $nob or '$nob'
0
 
LVL 9

Expert Comment

by:Snarfles
ID: 33498228
Hmm that should work...

Your previous page might not be passing nob correctly.
0
 
LVL 9

Expert Comment

by:Snarfles
ID: 33498233
echo $nob=$_POST['nob']; just to make sure it returns a number.
0
 
LVL 58

Expert Comment

by:cyberkiwi
ID: 33498253
$nob=(int)$_POST['nob'];
0
 

Author Closing Comment

by:savsoft
ID: 33498352
its work 100%
0

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