Question

I tried to do somthing like that:

$cat1 = array('hello', 'everyone');
$cat = array('bye', 'everyone');

for($index = 0; $index < 2; $index++) {
echo $cat$index[1];
}

It doesn’t work of course.
What do I need to change here?

Answer 1

You should use nested arrays, but this can be done.

$cat1 = array('hello', 'everyone');
$cat2 = array('bye', 'everyone');

for($i = 1; $i <= 2; $i++) {
    echo ${'cat' . $i}[1];
}

Reference: http://php.net/language.variables.variable

This would be much better though:

$cats = array(
    array('hello', 'everyone'),
    array('bye', 'everyone')
);
foreach ($cats as $cat) {
    echo $cat[1];
}