How to store multiple text box values in array

Question

Is it possible to store multiple textbox values in array, i have N number of textboxes

<input type="text" name="grade[]" id="grade" />
<input type="text" name="grade[]" id="grade" />
<input type="text" name="grade[]" id="grade" />

i tried this code to add all the text box value but it returns only the last text box value.

    $grade=$_POST['grade'];
for($i=1;$i<=3;$i++)
{
    $per=$grade[$i]*$grade[$i];
    echo $per;
}

Try var_dump($_POST['grade']) to get an idea of what is being passed to your PHP. — Martin
– Martin, Commented Aug 15, 2012 at 10:32

Francisco Presencia · Accepted Answer · 2012-08-16 01:49:21Z

2

Besides of starting on 0, it should finish on 2 if you have 3 text boxes.

for($i=0;$i<=2;$i++)
{
  $per=$grade[$i]*$grade[$i];
  echo $per;
}

Or you could use the array length if you don't want to hardcode the number of iteractions. This should work:

for($i=0;$i<=count($grade)-1;$i++)
{
  $per=$grade[$i]*$grade[$i];
  echo $per;
}

EDIT

This should work too and it's slightly cleaner (avoiding the -1) and using the pow() function:

for($i=0;$i<count($grade);$i++)
{
  echo pow($grade[$i], 2);
}

edited Aug 16, 2012 at 1:49

answered Aug 15, 2012 at 10:37

Francisco Presencia

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2 Comments

RobFos Over a year ago

well $i < 3 will stop at 2 just the same as $i <= 2 will.

Francisco Presencia Over a year ago

@Rawb92 I didn't see it when I wrote it, I saw it later, I just kept it in the question format with <=. Edited it. Also added the pow function.

RobFos · Accepted Answer · 2012-08-15 10:47:25Z

2

Try this one...

<?php

    foreach ($_GET['grade'] as $grade){
        $per = $grade * $grade;
        echo $per;
    }

?>

edited Aug 15, 2012 at 10:47

RobFos

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answered Aug 15, 2012 at 10:39

Denis Omeri

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Comments

kushalbhaktajoshi · Accepted Answer · 2012-08-15 10:55:50Z

0

Try using this

$per='';
$grade=$_POST['grade'];
for($i=0;$i<count($grade);$i++)
{
    $per .=$grade[$i]*$grade[$i];
    $per .='<<>>';
}
 echo $per;

count($grade) is used for n no. of textboxes. You need to concatenate the values of variable in order to get the values of all the textboxes.

edited Aug 15, 2012 at 10:55

answered Aug 15, 2012 at 10:49

kushalbhaktajoshi

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