PHP: Equivalent of include using eval

Question

If the code is the same, there appears to be a difference between:

include \'external.php\';

and

eval(\'?>\' . file_get_conten

Answer 1

Only eval('?>' . file_get_contents('external.php')); variant is correct replacement for include.

See tests:

',
    '',
    'some text',
);

$tempFile = tempnam('/tmp', 'test_');

print "\r\n" . "Include:" . "\r\n";
foreach ($includes as $include)
{
    file_put_contents($tempFile, $include);
    var_dump(include $tempFile);
}

unlink($tempFile);

print "\r\n" . "Eval 1:" . "\r\n";
foreach ($includes as $include)
    var_dump(eval('?>' . $include . '' . $include));

print "\r\n" . "Eval 3:" . "\r\n";
foreach ($includes as $include)
    var_dump(eval('?>' . $include . '

Output:

Include:
some textint(1)
some textint(1)
some textint(1)
some text