3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php /* A new exponent operator is introduced into PHP 5.6 */ var_dump(2 ** 32); // Pre-5.6 you would need pow(2,32) /* Power-tower is supported */ var_dump(2 ** 3 ** 4); // Pre-5.6 this would be pow(2, pow(3, 4)) but the syntax is much easier than nesting functions
Output for 5.6.7 - 7.1.0
int(4294967296) float(2.4178516392293E+24)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.5.35
Parse error: syntax error, unexpected '*' in /in/vbW5Q on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '*' in /in/vbW5Q on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/vbW5Q on line 3
Process exited with code 255.