If any field in array is not empty, display message - PHP / [POST] form

Question

I have a form with 25+ fields. I want to display a message if ANY of the fields in the array are NOT empty.

$customfields = array('q1', 'q2', 'q3', 'q4', 'q5', 'q6', 'q7', 'q8', 'q9', 'q10', 'q11', 'q12', 'q13', 'q14', 'q15', 'q16', 'q17', 'q18', 'q19', 'q20', 'q21', 'q22', 'q23', 'q24');

I've taken a look at similar SO questions for verifying that all fields are not empty, i.e.:

$error = false;
foreach($customfields as $field) {
  if (empty($_POST[$field])) {
    $error = true;
  }
}

if ($error) {
  echo "Here's an awesome message!";
} else {
  echo "None for you, Glen Coco.";
}

How do I do the opposite - display a message if ANY one or more than one fields in the array are not empty?

Thanks in advance!

if (!empty($_POST[$field])) ?

j08691
– j08691

2015-01-28 15:52:32 +00:00
Commented Jan 28, 2015 at 15:52 — j08691
– j08691, Commented Jan 28, 2015 at 15:52
check with !empty()

Shah Rukh
– Shah Rukh

2015-01-28 15:52:33 +00:00
Commented Jan 28, 2015 at 15:52 — Shah Rukh
– Shah Rukh, Commented Jan 28, 2015 at 15:52

Rizier123 · Accepted Answer · 2015-01-28 15:52:44Z

1

I think you want to take a look into the NOT operator.

You can just write this:

if (!empty($_POST[$field])) {
  //^ See here the NOT operator
    $error = true;
}

For more information see the manual: http://php.net/manual/en/language.operators.logical.php

answered Jan 28, 2015 at 15:52

Rizier123

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Comments

catavaran · Accepted Answer · 2015-01-28 15:52:57Z

0

Do the opposite comparison in the if:

$error = false;
foreach($customfields as $field) {
  if (!empty($_POST[$field])) {
    $error = true;
    break; // get out of foreach loop
  }
}

answered Jan 28, 2015 at 15:52

catavaran

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