How to fix undefined index error in in line no3

[kanika]

<?php
 
$iit1=$_POST['iit1'];
$iit2=$_POST['iit2'];
$iit3=$_POST['iit3'];
$iit4=$_POST['iit4'];
$iit5=$_POST['iit5'];
$iit6=$_POST['iit6'];
$iit7=$_POST['iit7'];
$iit8=$_POST['iit8'];
$iit9=$_POST['iit9'];
$iit10=$_POST['iit10'];
 
$c1=$_POST['c1'];
$c2=$_POST['c2'];
$c3=$_POST['c3'];
$c4=$_POST['c4'];
$c5=$_POST['c5'];
$c6=$_POST['c6'];
$c7=$_POST['c7'];
$c8=$_POST['c8'];
$c9=$_POST['c9'];
$c10=$_POST['c10'];
 
$te1=$_POST['te1'];
$te2=$_POST['te2'];
$te3=$_POST['te3'];
$te4=$_POST['te4'];
$te5=$_POST['te5'];
$te6=$_POST['te6'];
$te7=$_POST['te7'];
$te8=$_POST['te8'];
$te9=$_POST['te9'];
$te10=$_POST['te10'];
 
$ai1=$_POST['ai1'];
$ai2=$_POST['ai2'];
$ai3=$_POST['ai3'];
$ai4=$_POST['ai4'];
$ai5=$_POST['ai5'];
$ai6=$_POST['ai6'];
$ai7=$_POST['ai7'];
$ai8=$_POST['ai8'];
$ai9=$_POST['ai9'];
$ai10=$_POST['ai10'];
 
$cn21=$_POST['cn21'];
$cn22=$_POST['cn22'];
$cn23=$_POST['cn23'];
$cn24=$_POST['cn24'];
$cn25=$_POST['cn25'];
$cn26=$_POST['cn26'];
$cn27=$_POST['cn27'];
$cn28=$_POST['cn28'];
$cn29=$_POST['cn29'];
$cn210=$_POST['cn210'];
 
$mf1=$_POST['mf1'];
$mf2=$_POST['mf2'];
$mf3=$_POST['mf3'];
$mf4=$_POST['mf4'];
$mf5=$_POST['mf5'];
$mf6=$_POST['mf6'];
$mf7=$_POST['mf7'];
$mf8=$_POST['mf8'];
$mf9=$_POST['mf9'];
$mf10=$_POST['mf10'];
 
$co1=$_POST['co1'];
$co2=$_POST['co2'];
$co3=$_POST['co3'];
$co4=$_POST['co4'];
$co5=$_POST['co5'];
$co6=$_POST['co6'];
$co7=$_POST['co7'];
$co8=$_POST['co8'];
$co9=$_POST['co9'];
$co10=$_POST['co10'];
 
$ps1=$_POST['ps1'];
$ps2=$_POST['ps2'];
$ps3=$_POST['ps3'];
$ps4=$_POST['ps4'];
$ps5=$_POST['ps5'];
$ps6=$_POST['ps6'];
$ps7=$_POST['ps7'];
$ps8=$_POST['ps8'];
$ps9=$_POST['ps9'];
$ps10=$_POST['ps10'];
 
$dms1=$_POST['dms1'];
$dms2=$_POST['dms2'];
$dms3=$_POST['dms3'];
$dms4=$_POST['dms4'];
$dms5=$_POST['dms5'];
$dms6=$_POST['dms6'];
$dms7=$_POST['dms7'];
$dms8=$_POST['dms8'];
$dms9=$_POST['dms9'];
$dms10=$_POST['dms10'];
 
$ds1=$_POST['ds1'];
$ds2=$_POST['ds2'];
$ds3=$_POST['ds3'];
$ds4=$_POST['ds4'];
$ds5=$_POST['ds5'];
$ds6=$_POST['ds6'];
$ds7=$_POST['ds7'];
$ds8=$_POST['ds8'];
$ds9=$_POST['ds9'];
$ds10=$_POST['ds10'];
 
$u1=$_POST['u1'];
$u2=$_POST['u2'];
$u3=$_POST['u3'];
$u4=$_POST['u4'];
$u5=$_POST['u5'];
$u6=$_POST['u6'];
$u7=$_POST['u7'];
$u8=$_POST['u8'];
$u9=$_POST['u9'];
$u10=$_POST['u10'];
 
$cg1=$_POST['cg1'];
$cg2=$_POST['cg2'];
$cg3=$_POST['cg3'];
$cg4=$_POST['cg4'];
$cg5=$_POST['cg5'];
$cg6=$_POST['cg6'];
$cg7=$_POST['cg7'];
$cg8=$_POST['cg8'];
$cg9=$_POST['cg9'];
$cg10=$_POST['cg10'];
 
 
$bc1=$_POST['bc1'];
$bc2=$_POST['bc2'];
$bc3=$_POST['bc3'];
$bc4=$_POST['bc4'];
$bc5=$_POST['bc5'];
$bc6=$_POST['bc6'];
$bc7=$_POST['bc7'];
$bc8=$_POST['bc8'];
$bc9=$_POST['bc9'];
$bc10=$_POST['bc10'];
 
$se1=$_POST['se1'];
$se2=$_POST['se2'];
$se3=$_POST['se3'];
$se4=$_POST['se4'];
$se5=$_POST['se5'];
$se6=$_POST['se6'];
$se7=$_POST['se7'];
$se8=$_POST['se8'];
$se9=$_POST['se9'];
$se10=$_POST['se10'];
 
 
$ss1=$_POST['ss1'];
$ss2=$_POST['ss2'];
$ss3=$_POST['ss3'];
$ss4=$_POST['ss4'];
$ss5=$_POST['ss5'];
$ss6=$_POST['ss6'];
$ss7=$_POST['ss7'];
$ss8=$_POST['ss8'];
$ss9=$_POST['ss9'];
$ss10=$_POST['ss10'];
 
$d1=$_POST['d1'];
$d2=$_POST['d2'];
$d3=$_POST['d3'];
$d4=$_POST['d4'];
$d5=$_POST['d5'];
$d6=$_POST['d6'];
$d7=$_POST['d7'];
$d8=$_POST['d8'];
$d9=$_POST['d9'];
$d10=$_POST['d10'];
 
$sad1=$_POST['sad1'];
$sad2=$_POST['sad2'];
$sad3=$_POST['sad3'];
$sad4=$_POST['sad4'];
$sad5=$_POST['sad5'];
$sad6=$_POST['sad6'];
$sad7=$_POST['sad7'];
$sad8=$_POST['sad8'];
$sad9=$_POST['sad9'];
$sad10=$_POST['sad10'];
 
 
 
$j1=$_POST['j1'];
$j2=$_POST['j2'];
$j3=$_POST['j3'];
$j4=$_POST['j4'];
$j5=$_POST['j5'];
$j6=$_POST['j6'];
$j7=$_POST['j7'];
$j8=$_POST['j8'];
$j9=$_POST['j9'];
$j10=$_POST['j10'];
 
 
$ada1=$_POST['ada1'];
$ada2=$_POST['ada2'];
$ada3=$_POST['ada3'];
$ada4=$_POST['ada4'];
$ada5=$_POST['ada5'];
$ada6=$_POST['ada6'];
$ada7=$_POST['ada7'];
$ada8=$_POST['ada8'];
$ada9=$_POST['ada9'];
$ada10=$_POST['ada10'];
 
$cn1=$_POST['cn1'];
$cn2=$_POST['cn2'];
$cn3=$_POST['cn3'];
$cn4=$_POST['cn4'];
$cn5=$_POST['cn5'];
$cn6=$_POST['cn6'];
$cn7=$_POST['cn7'];
$cn8=$_POST['cn8'];
$cn9=$_POST['cn9'];
$cn10=$_POST['cn10'];
 
$sim1=$_POST['sim1'];
$sim2=$_POST['sim2'];
$sim3=$_POST['sim3'];
$sim4=$_POST['sim4'];
$sim5=$_POST['sim5'];
$sim6=$_POST['sim6'];
$sim7=$_POST['sim7'];
$sim8=$_POST['sim8'];
$sim9=$_POST['sim9'];
$sim10=$_POST['sim10'];
 
?>

[Rabbit]

An undefined index error means that they key you're using, in this case 'iit1' doesn't exist in the array you're trying to access, in this case $_POST. Basically, it's saying the page that called that PHP page didn't pass any variable named iit1.

[ayukawaa]

Here's my own function for dealing with this... and works with ANY array

$iit1=read_from_array[$_POST, 'iit1'];

/*
 * READ A VALUE FROM AN ARRAY
 * param array - array from where to read
 * param string - key to read from the array
 * param string - default_value to return if the key does not exist or the it is not a valid array
 * param php_function - php function to execute using the key value
 * return string
 *
**/
    function read_from_array($array, $key, $default_value='', $php_function='')
    {
        if(is_array($array))
        {
            if (array_key_exists($key, $array))
            {
                $str = str_replace('\\', '/', trim($array[$key]));
                if(!empty($php_function))
                {
                    return call_user_func($php_function, $str);
                }
                else
                {
                    return $str;
                }
            }
        }
        return $default_value;
    }
}