3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isFalseLoose($x) { return $x == false; } function isFalseStrict($x) { return $x === false; } var_dump('------ Loose ------'); var_dump(isFalseLoose(0)); var_dump(isFalseLoose('0')); var_dump(isFalseLoose(false)); var_dump(isFalseLoose('false')); var_dump('------ Strict ------'); var_dump(isFalseStrict(0)); var_dump(isFalseStrict('0')); var_dump(isFalseStrict(false)); var_dump(isFalseStrict('false'));
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
string(19) "------ Loose ------" bool(true) bool(true) bool(true) bool(false) string(20) "------ Strict ------" bool(false) bool(false) bool(true) bool(false)
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
preferences:
178.69 ms | 407 KiB | 5 Q