Type Juggler · Level 2 of 7

Strings that look like numbers

Two strings compared with ==. Watch what happens when both look like numbers.

<?phpecho var_export("1" == "01", true) . PHP_EOL;echo var_export("10" == "1e1", true) . PHP_EOL;echo var_export("abc" == "ABC", true) . PHP_EOL;echo var_export("1" === "01", true) . PHP_EOL;

1. Predict the output

Tap the lines in the order you think they print.

  1. 1…
  2. 2…
  3. 3…
  4. 4…