How to insert an else to display message in case there are no files to upload

Question

How to insert an else to display message in case there are no files to upload

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#1 by (2 votes)
#2 by (1 votes)
#3 by (0 votes)

2

Code

<?php
$files = $obj->field('upload');

foreach ($files as $file)
  {
    $file_url = get_attached_file($file['id']);
    echo '<a href="' . $file["guid"] . '">' . $file["post_title"] . '</a>';
    echo '<br>';
  }
?>

Error message when there is no attachment:

Warning: Invalid argument supplied for foreach () in /var/www/html/wp-content/plugins/pods/components/Templates/Templates.php(500) : eval () 'd code on line 8

php

asked by anonymous 19.11.2015 / 19:48

3 answers

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score 2 · Answer 1

For your case, I think it's pretty simple:

<?php

$files = $obj->field('upload');
if (!empty($files)) {
    foreach ( $files as $file ) {
             $file_url = get_attached_file($file['id']);
             echo '<a href="' . $file["guid"] . '">'
                  . $file["post_title"]
                  . '</a>';
                  . '<br>';
    }
} else {
   echo "Não há arquivos enviados!";  die();
}

But I suggest doing something better worked, using exception:

function listFiles()
{
  $file = func_get_args(0);
  try {

      if (empty($file)) {
         throw new Exception("Não há arquivo(s) enviado(s)!");
      }
       $content = '';
      foreach ( $files as $file ) {
         $file_url = get_attached_file($file['id']);
         $content.= '<a href="' . $file["guid"] . '">'
                    . $file["post_title"]
                    . '</a>';
                    . '<br>';
      }
      return $content;

  } catch (Exception $e)  {
     return $e->getMessage();
  } 
} 

echo listFiles($obj->field('upload'));

score 1 · Answer 2

Use isset or empty to verify that this variable / array has values.

<?php
$files = $obj->field('upload');

if(!empty($files)){
foreach ($files as $file)
  {
    $file_url = get_attached_file($file['id']);
    echo '<a href="' . $file["guid"] . '">' . $file["post_title"] . '</a>';
    echo '<br>';
  }
} else {
 print "Nenhum ficheiro selecionado";
}
?>

score 0 · Answer 3

You can do a simple check in $files :

<?php

$files = $obj->field('upload');
if (count($files)) {
    foreach ( $files as $file ) {
    $file_url = get_attached_file($file['id']);
    echo '<a href="' . $file["guid"] . '">' . $file["post_title"] . '</a>';
       echo '<br>';
    }
}