Access a variable using a counter as part of the variable name

Question

I tried to do somthing like that:

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

for($index = 0; $index < 2; $index++) {
echo $         


        

Answer 1

Is this what you intended?

$cat0 = array('hello', 'everyone');
$cat1 = array('bye', 'everyone');

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

Answer 2

You can't reference $index like that, it isn't an array.

echo $cat[$index];

is what you want to do.

Answer 3

To echo elements inside arrays, you need to be using

echo $cat[$index]

with your example.

I'm not sure what the $index[1] is supposed to be doing? Maybe I have misunderstood your question.

Answer 4

If you insist on doing it this way...

echo ${'cat' . $index}[1];

Answer 5

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];
}