3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(" 2" == " 2"); // true var_dump(" 2 " == " 2 "); // false; neither numeric str, binary comp var_dump(" 2 "+0 == " 2 "); // true: numeric context so str headed by num vs str headed by num var_dump(" 2 " == 2); // true compared with number, so numeric context comping string headed by number var_dump(" 2 " == " 2"); // false; binary cmp b/c no numeric str in 1st operand so binary cmp w/o numeric context var_dump(" 2 "+0 == " 2"); // true numeric context, so string headed by num vs "2"
Output for 7.1.0
bool(true) bool(false) Notice: A non well formed numeric value encountered in /in/jCefa on line 6 bool(true) bool(true) bool(false) Notice: A non well formed numeric value encountered in /in/jCefa on line 11 bool(true)
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.0.14
bool(true) bool(false) bool(true) bool(true) bool(false) bool(true)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/jCefa on line 11
Process exited with code 255.