Question

Here’s an example of what I mean:

I have an array:

array('type'=>'text', 
      'class'=>'input', 
      'name'=>'username', 
      'id'=>'username', 
      'value'=>'', 
      'size'=>'30', 
      'rows'=>'',
    'cols'=>'');

Then, I loop through it like so:

$input = '<input ';
    foreach($input_array as $key => $value) {
        if(isset($key) && !empty($key)) {
            $input .= $key . '="' . $value . '" ';
        }   
    }   
$input .= '/>';

I’m hoping to return:

<input type="text" class="input" name="username" id="username" size="30" />

I’ve tried using PHP’s sort() functions to no avail. The nearest I can figure is I’d need to use something like usort(), but I’m having trouble figuring how to write a function which will do what I want.

Any advice on this topic is greatly appreciated, and thanks very much for reading.

Answer 1

It should already be in that order. PHP arrays are sorted so the elements will be in the order in which you inserted them.

You also need to call empty() on $value not $key; $key should always be non-empty. You also don’t need isset() as well as empty(). Apart from that your code works fine and produces the desired output.

I would also be wary of using empty() because it will return true for a string ‘0’. This could be a valid parameter value which would be ignored. You could instead check that strlen($value) > 0.