弄清楚在PHP中传递标头的方法

Question

Referring to the following PHP code here

$data = array(
    'foo' => 'foo foo foo',
    'bar' => 'bar bar bar',
    'baz' => 'baz baz baz'
);

The explanation for CURLOPT_POSTFIELDS below the code in the document says that :

equivilent HTML form value for this might be something like <input type='hidden' name='foo' value='foo foo foo' />

1)How did the person who explained the code in the document figured out that the type was hidden in its HTML equivalent?

2)What if I have to use type = header, then how would the PHP code would look like?

Answer 1

You can figure out form elements of a remote page by downloading it and parsing it using an HTML parser like this : http://simplehtmldom.sourceforge.net/

Or you could simple view source and forge your script accordingly.