Question

I’m looking to iterate through some $_POSTed variables from an HTML form. Unfortunately, I can’t figure out to access each “row” to do stuff to it.

$_POST['names'] = array('alan', 'bob', 'carl', 'dan', 'ed');
$_POST['emails'] = array('0@.com', '1@com', '2.com', '3.com', '4.com');
$data=$_POST;

foreach($data as $index=>$row){
  doSomethingNames($row[$index]); //in reality, this would be a more complicated function that needs to access each row's variables, same for printEmails()
  doSomethingEmails($row[$index]); 
}

function doSomethingNames($row){
   print_r($row['names']);// should print alan-bob-carl-dan-ed
}

function doSomethingEmails($row){
   print_r($row['emails']); //should print 0.com-1.com-2.com-3.com-4.com
}

Running this code currently prints nothing. Any help someone might provide to help me access each rows’ data would be greatly appreciated.

Answer 1

Better way is use another structure of array:

<?php
    $data['names'] = array('0aa', '1bb', '2cc', '3dd', '4ee');
    $data['emails'] = array('AA', 'BB', 'CC', 'DD', 'EE');

    $united_data = array();
    $count = count( $data['names'] );

    for( $i = 0; $i < $count; $i++ )
    {
        array_push( $united_data, 
            array( 'name' => $data['names'][$i], 'email' => $data['emails'][$i] )
        );
    }

    foreach( $united_data as $key => $val ){
        printNames( $united_data[$key] );
        printEmails( $united_data[$key] );

    }

    function printNames( $row ){
        echo 'name: ' . $row['name'] . ', ';
    }

    function printEmails( $row ){
        echo 'email: ' . $row['email'] . '<br>';
    }