Ignore # array keys in php foreach loop

Question

I am trying to loop over certain array keys in drupal, but this is more of a generic php array question.

The array looks something like this...

$form['items'] = array(
  #title  =>  'hello',
  0       =>  array(
               #subtitle => 'hello2';
              ),
  1       =>  array(
               #subtitle => 'hello2';
              ),
  #prefix =>  '<div>hello</div>',
);

As you can see, the keys are a mix of numeric keys and #meta keys.

I am using this...

foreach($form['items'] as $x) {
  unset($form['items'][$x]['column1']); 
}

But i only want to target the numeric keys, I have tried is_numeric but it returned false.

Can someone tell me how to ignore the other keys? (Ignore #title and #prefix etc)

The # symbol in php starts a line comment. If your array declaration looks literally like the one that you pasted, $form['items'] contains 2 empty arrays and nothing more. Unless Drupal does some weird magic. — Bartosz Zasada
– Bartosz Zasada, Commented Oct 17, 2016 at 14:05
Yeah i think its a Drupal thing, the answer below sorted it! — Collins
– Collins, Commented Oct 17, 2016 at 14:15

Vinicius Dias · Accepted Answer · 2016-10-17 14:04:01Z

2

You want to check the keys, but you are using the value in your foreach. Do the following:

foreach($form['items'] as $key => $value) {
    if (is_numeric($key))
        unset($form['items'][$key]); 
}

Hope I was helpful

answered Oct 17, 2016 at 14:04

Vinicius Dias

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Comments

Mohit Tanwani · Accepted Answer · 2016-10-17 14:05:25Z

2

Use is_int() rather than is_numberic()

foreach ($input_array as $key => $val) {
  if (is_int($key)) {
    // do stuff
  }
}

Important to note that is_int only works on things that are type integer, meaning string representations are not allowed.

answered Oct 17, 2016 at 14:05

Mohit Tanwani

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