3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function which_is_lower($a, $b) { if ( $a < $b ) { return $a; } else { return $b; } } function compare_comparisons($a, $b) { echo 'min() gives:'; var_dump( min($a, $b) ); echo 'comparison with < gives:'; var_dump( which_is_lower($a, $b) ); } echo PHP_EOL, '-1 vs NULL: ', PHP_EOL; compare_comparisons(-1, NULL); echo PHP_EOL, '1 vs NULL: ', PHP_EOL; compare_comparisons(1, NULL); echo PHP_EOL, '-1 vs FALSE: ', PHP_EOL; compare_comparisons(-1, FALSE); echo PHP_EOL, '1 vs FALSE: ', PHP_EOL; compare_comparisons(1, FALSE); echo PHP_EOL, '-1 vs TRUE: ', PHP_EOL; compare_comparisons(-1, FALSE); echo PHP_EOL, '1 vs TRUE: ', PHP_EOL; compare_comparisons(1, FALSE);
Output for 4.3.10 - 4.4.9, 5.0.2 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
-1 vs NULL: min() gives:NULL comparison with < gives:NULL 1 vs NULL: min() gives:NULL comparison with < gives:NULL -1 vs FALSE: min() gives:bool(false) comparison with < gives:bool(false) 1 vs FALSE: min() gives:bool(false) comparison with < gives:bool(false) -1 vs TRUE: min() gives:bool(false) comparison with < gives:bool(false) 1 vs TRUE: min() gives:bool(false) comparison with < gives:bool(false)
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 23 PHP_EOL-1 vs NULL: Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 23 PHP_EOLmin() gives:NULL comparison with < gives:NULL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 26 PHP_EOL1 vs NULL: Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 26 PHP_EOLmin() gives:NULL comparison with < gives:NULL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 29 PHP_EOL-1 vs FALSE: Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 29 PHP_EOLmin() gives:bool(false) comparison with < gives:bool(false) Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 32 PHP_EOL1 vs FALSE: Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 32 PHP_EOLmin() gives:bool(false) comparison with < gives:bool(false) Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 35 PHP_EOL-1 vs TRUE: Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 35 PHP_EOLmin() gives:bool(false) comparison with < gives:bool(false) Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 38 PHP_EOL1 vs TRUE: Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/eW1Es on line 38 PHP_EOLmin() gives:bool(false) comparison with < gives:bool(false)