PHP FOR loop taking values from form (post)

Question

I have form with elements (text fields), 5 diference elements names:

name1a   name1b
name2a   name2b
name3a   name3b
name4a   name4b
name5a   name5b

and php file:
for ($i = 1; $i <= 5; $i++) {
    echo $i,"<br/>";
 $name. $i .'a' = $_POST['name'.$i.'a'];
 echo $name. $i .a;
}

It is posible read text fields with for loop or no? And pass values to sql query aswell?

you could loop for $_POST...?

Sudhir Bastakoti
– Sudhir Bastakoti

2014-06-30 08:02:15 +00:00
Commented Jun 30, 2014 at 8:02 — Sudhir Bastakoti
– Sudhir Bastakoti, Commented Jun 30, 2014 at 8:02
yes $_POST is an array

Vijayaragavendran
– Vijayaragavendran

2014-06-30 08:02:53 +00:00
Commented Jun 30, 2014 at 8:02 — Vijayaragavendran
– Vijayaragavendran, Commented Jun 30, 2014 at 8:02
@Sudhir yes loop for POST

Klapsius
– Klapsius

2014-06-30 08:03:26 +00:00
Commented Jun 30, 2014 at 8:03 — Klapsius
– Klapsius, Commented Jun 30, 2014 at 8:03

Vijayaragavendran · Accepted Answer · 2014-06-30 08:09:29Z

3

you can use

extract($_POST);

like

echo $name1a;

echo $name1b;

you can access the value with the text-box names itself

edited Jun 30, 2014 at 8:09

answered Jun 30, 2014 at 8:02

Vijayaragavendran

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Comments

pavel · Accepted Answer · 2014-06-30 08:03:28Z

1

It´s possible, but it´s a bad practice and I can´t recommend it you.

So, use arrays to store similar values from form (when you indexed your names, every times use arrays instead).

<input name="name[1]" ...> <!-- key isn't neccesary here, name[] will count from 0 -->
<input name="name[2]" ...>
<input name="name[3]" ...>

<?php

for ($i = 1; $i <= count($_POST['name']), $i++) {
    echo $_POST['name'][$i] . '<br>'; // work directly with this variables/array, don't create duplicate vars
}

?>

answered Jun 30, 2014 at 8:03

pavel

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9 Comments

Klapsius Over a year ago

why u can't recomend?

Klapsius Over a year ago

So bether is 5 times take values from form and make 5 sql querys aswell?

pavel Over a year ago

Why you need to create X new variables when you have the same values in same-named keys in array? Why you now speak about more SQL queries when in your question is no SQL query? Of course, use just one SQL query instead of five, it's okay and I've never said anything else. You can use POST array in your SQL query, you don't need collection of new variables.

pavel Over a year ago

I don't know what query you have, for example: insert into table (name, lastname, phone) VALUES ('$_POST['name'][0]', '$_POST['name'][1]', '$_POST['name'][2]'); - there are bad key names, no SQL injection prevention, but as example it can be.

Klapsius Over a year ago

so 5 times: sqlsrv_query( $conn, $sql1); sqlsrv_query( $conn, $sql2); sqlsrv_query( $conn, $sql3);.... and 5 times insert into ... is bether then this with FOR Loop?

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