表单提交后屏幕上不显示任何内容

Question

I've looked and tried many of the solutions here and on other sites but I am still befuddled (still doing the PHP school thing, but something is eluding me).

I have a page that a user can select multiple check boxes and it builds the data:

<?php
$username = $_POST['username'];
$filename = "../files/Awards_$username.txt";
$award = $_POST['awardrec'];
file_put_contents($filename, print_r($award, true), FILE_APPEND)
?>

Simple enough. It writes the data as:

Array
(
    [0] => Value1
    [1] => Value2
    [2] => Value3
    [3] => Value4
    [4] => Value5
    [5] => Value6
)

But nothing I seem to do results in anything being displayed. No error messages; nothing, just a white page.

Ultimately it's just a page that will read the data and display a graphic associated with the value.

Where would a good article on this type of operation be?

Answer 1

I am not sure what exactly you are trying to achieve but this should help at least a bit hopefully in the right direction :

<?php
//  For test
//  $_POST['username'] = 'some_username';
//  $_POST['awardrec'] = array( 'award_one' ,'award_two' );

    if( ! isset( $_POST['username'] ) )
    {
        echo 'username is not set';
        exit;
    }

    $username = trim( $_POST['username'] );

    if( $username == '' )
    {
        echo 'username is empty';
        exit;
    }

    $filename = "../files/Awards_$username.txt";

    if( ! isset( $_POST['awardrec'] ) )
    {
        echo 'awardrec is not set';
        exit;
    }

    $award = $_POST['awardrec'];

//  Save the contents to file
    file_put_contents( $filename ,print_r( $award ,true ) ,FILE_APPEND );

//  Display contents
    echo 'Username : ' ,$username ,'<br>';

    echo 'Awards :' ,'<br>';

    foreach( $award as $value )
    {
        echo $value .'<br>';
    }