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<?php $f = get_defined_functions(); echo implode("\n",preg_filter('/^(is_)/','\1',$f['internal']));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
is_subclass_of is_a is_uploaded_file is_writable is_writeable is_readable is_executable is_file is_dir is_link is_finite is_nan is_infinite is_null is_resource is_bool is_int is_integer is_long is_float is_double is_numeric is_string is_array is_object is_scalar is_callable is_iterable is_countable
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 is_subclass_of is_a is_uploaded_file is_writable is_writeable is_readable is_executable is_file is_dir is_link is_finite is_nan is_infinite is_null is_resource is_bool is_int is_integer is_long is_float is_double is_numeric is_string is_array is_object is_scalar is_callable is_iterable is_countable
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
is_subclass_of is_a is_finite is_nan is_infinite is_uploaded_file is_null is_resource is_bool is_int is_float is_integer is_long is_double is_real is_numeric is_string is_array is_object is_scalar is_callable is_iterable is_countable is_writable is_writeable is_readable is_executable is_file is_dir is_link
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33
is_subclass_of is_a is_finite is_nan is_infinite is_uploaded_file is_null is_resource is_bool is_int is_float is_integer is_long is_double is_real is_numeric is_string is_array is_object is_scalar is_callable is_iterable is_writable is_writeable is_readable is_executable is_file is_dir is_link
Output for 7.0.0 - 7.0.33
is_subclass_of is_a is_finite is_nan is_infinite is_uploaded_file is_null is_resource is_bool is_int is_float is_integer is_long is_double is_real is_numeric is_string is_array is_object is_scalar is_callable is_writable is_writeable is_readable is_executable is_file is_dir is_link
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
is_subclass_of is_a is_finite is_nan is_infinite is_uploaded_file is_null is_resource is_bool is_long is_float is_int is_integer is_double is_real is_numeric is_string is_array is_object is_scalar is_callable is_writable is_writeable is_readable is_executable is_file is_dir is_link
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236.21 ms | 402 KiB | 337 Q