variable "if" conditions

[Anon]

Does anyone know how to get PHP to evaluate variable conditions, for example:

$condition = '1 == 1';

if (eval($condition)) {
echo '1 is equal to 1';
}

TIA

[Anon]

The string that gets eval()ed has to be a proper statement that returns the value that gets if()ed, not just a random bit of syntax:

$condition = 'return 1 == 1;';

if (eval($condition)) {
echo '1 is equal to 1';
}

or

$condition = '1 == 1';

if (eval("return $condition;")) {
echo '1 is equal to 1';
}