<?php
function getCount(&$a) { return count($a); }
$cnt = getCount( $foo );
var_dump($cnt);
// и если сделать так
$cnt = getCount( $foo['bar'] );
var_dump($cnt);
//EOF//
Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/EV9Fh:3
Stack trace:
#0 /in/EV9Fh(5): getCount(NULL)
#1 {main}
thrown in /in/EV9Fh on line 3
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/EV9Fh:3
Stack trace:
#0 /in/EV9Fh(5): getCount(NULL)
#1 {main}
thrown in /in/EV9Fh on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in /in/EV9Fh:3
Stack trace:
#0 /in/EV9Fh(5): getCount(NULL)
#1 {main}
thrown in /in/EV9Fh on line 3
Process exited with code 255.
Warning: count(): Parameter must be an array or an object that implements Countable in /in/EV9Fh on line 3
int(0)
Warning: count(): Parameter must be an array or an object that implements Countable in /in/EV9Fh on line 3
int(0)