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<?php class Object implements Countable { public function count() { return 4; } } ?> <?php $array = array(); echo "\n".var_dump(count($array)); echo "\n null"; $array = null; echo "\n".var_dump(count($array)); $array = 'anything'; echo "\n".var_dump(count($array)); $array = array('elemento'); echo "\n".var_dump(count($array)); $array = array(2); echo "\n".var_dump(count($array)); $array = 2; echo "\n".var_dump(count($array)); $array = new Object(); echo "\n".var_dump(count($array));
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Cannot use 'Object' as class name as it is reserved in /in/jIiNP on line 2
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, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
int(0) nullint(0) int(1) int(1) int(1) int(1) int(4)
Output for 5.0.5
Fatal error: Interface 'Countable' not found in /in/jIiNP on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class 'Countable' not found in /in/jIiNP on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/jIiNP on line 2
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 '{' in /in/jIiNP on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/jIiNP on line 2
Process exited with code 255.

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