Question

In this situation, is it better to use a loop or not?

echo "0";
echo "1";
echo "2";
echo "3";
echo "4";
echo "5";
echo "6";
echo "7";
echo "8";
echo "9";
echo "10";
echo "11";
echo "12";
echo "13";

or

$number = 0;

while ($number != 13)
{
    echo $number;
    $number = $number + 1;
}

Answer 1

$string = "<?php \n";

$repeatNum = 20;

for($i = 0; $i < $repeatNum; $i++)
{
    $string .= "echo \"" . $number . "\"; \n";
}

$string = "?>";

Now you can either

eval($string);

or

file_put_contents("newfile.text", $string);

and you will get a file with all the echos!

Note: This is not really a ‘serious’ answer. If you really want to create a PHP file with a number of echos, it works, but evaling the statement at the end is probably not the best idea for regular programming practice.