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<?php echo 'count(false): ',count(false),"\n"; echo 'count(0): ',count(0),"\n"; echo 'count(array(false)): ',count(array(false)),"\n"; echo 'count(array(0)): ',count(array(0)),"\n"; echo 'count(null): ',count(null),"\n"; echo 'count(array()): ',count(array()),"\n"; class Test {} $t = new Test(); echo 'count($t): ', count($t), "\n"; // not empty; see below: echo 'empty(null):', empty(null), "\n"; echo 'empty(array():',empty(array()),"\n"; // obj w/no properties not empty PHP5+ echo 'empty($t):',empty($t),"\n";
Output for 8.3.0 - 8.3.6
count(false): Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, false given in /in/fZe6I:2 Stack trace: #0 {main} thrown in /in/fZe6I on line 2
Process exited with code 255.
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
count(false): Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, bool given in /in/fZe6I:2 Stack trace: #0 {main} thrown in /in/fZe6I on line 2
Process exited with code 255.
Output for 8.0.0 - 8.0.9
count(false): Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, bool given in /in/fZe6I:2 Stack trace: #0 {main} thrown in /in/fZe6I on line 2
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
count(false): Warning: count(): Parameter must be an array or an object that implements Countable in /in/fZe6I on line 2 1 count(0): Warning: count(): Parameter must be an array or an object that implements Countable in /in/fZe6I on line 3 1 count(array(false)): 1 count(array(0)): 1 count(null): Warning: count(): Parameter must be an array or an object that implements Countable in /in/fZe6I on line 8 0 count(array()): 0 count($t): Warning: count(): Parameter must be an array or an object that implements Countable in /in/fZe6I on line 13 1 empty(null):1 empty(array():1 empty($t):
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
count(false): 1 count(0): 1 count(array(false)): 1 count(array(0)): 1 count(null): 0 count(array()): 0 count($t): 1 empty(null):1 empty(array():1 empty($t):
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected ')', expecting :: (T_PAAMAYIM_NEKUDOTAYIM) in /in/fZe6I on line 17
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected ')', expecting T_PAAMAYIM_NEKUDOTAYIM in /in/fZe6I on line 17
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected ')', expecting T_PAAMAYIM_NEKUDOTAYIM in /in/fZe6I on line 17
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/fZe6I on line 17
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_VARIABLE or '$' in /in/fZe6I on line 17
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/fZe6I on line 17
Process exited with code 255.
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