'42' - число
'1337' - число
'1e4' - число
'not numeric' - НЕ число
'9.1' - число
'234ffffdsf' - НЕ число
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
'42' - число
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/3h6FL on line 14
PHP_EOL'1337' - число
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/3h6FL on line 14
PHP_EOL'1e4' - число
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/3h6FL on line 14
PHP_EOL'not numeric' - НЕ число
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/3h6FL on line 16
PHP_EOL'9.1' - число
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/3h6FL on line 14
PHP_EOL'234ffffdsf' - НЕ число
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/3h6FL on line 16
PHP_EOL