int(42)
int(420)
int(1337)
int(13370)
int(1337)
int(13370)
int(1337)
int(13370)
int(1337)
int(13370)
int(1337)
float(13370)
'not numeric' is NOT numeric
array (
) is NOT numeric
int(9)
float(91)
NULL is NOT numeric
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
int(42)
int(420)
int(1337)
int(13370)
int(1337)
int(13370)
int(1337)
int(13370)
int(1337)
int(13370)
int(1337)
float(13370)
'not numeric' is NOT numeric
array (
) is NOT numeric
int(9)
float(91)
NULL is NOT numeric