3v4l.org

run code in 300+ PHP versions simultaneously
<?php $bit = 5.99999999999999; echo("1 << 6 = "); echo(1 << 6); echo("\n"); echo("\$bit = "); echo($bit); echo("\n"); echo("1 << \$bit = "); echo(1 << $bit); echo("\n"); echo("gettype(6) = "); echo gettype(6); echo("\n"); echo("gettype(log(64,2)) = "); echo gettype(log(64,2)); echo("\n"); echo("1 << round(\$bit) = "); echo(1 << round($bit));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
1 << 6 = 64 $bit = 6 1 << $bit = Deprecated: Implicit conversion from float 5.99999999999999 to int loses precision in /in/VRp01 on line 6 32 gettype(6) = integer gettype(log(64,2)) = double 1 << round($bit) = 64
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 1 << 6 = 64 $bit = 6 1 << $bit = Deprecated: Implicit conversion from float 5.99999999999999 to int loses precision in /in/VRp01 on line 6 32 gettype(6) = integer gettype(log(64,2)) = double 1 << round($bit) = 64
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
1 << 6 = 64 $bit = 6 1 << $bit = 32 gettype(6) = integer gettype(log(64,2)) = double 1 << round($bit) = 64
preferences:
260.43 ms | 403 KiB | 291 Q