Warning: Constant NULL already defined in /in/iURuu on line 2
Warning: Constant True already defined in /in/iURuu on line 3
bool(true)
NULL
Warning: Undefined variable $a in /in/iURuu on line 7
ok
bool(true)
NULL
Notice: Undefined variable: a in /in/iURuu on line 7
ok
Output for 7.3.32 - 7.3.33, 7.4.26
bool(true)
NULL
ok
Output for 5.1.0 - 5.1.2
string(11) "hello world"
string(11) "hello world"
Notice: Undefined variable: a in /in/iURuu on line 7
bad
Output for 5.0.4 - 5.0.5
string(11) "hello world"
string(11) "hello world"
Notice: Undefined variable: a in /in/iURuu on line 6
Notice: Undefined variable: a in /in/iURuu on line 7
bad
string(11) "hello world"
string(11) "hello world"
Notice: Undefined variable: a in /in/iURuu on line 6
Notice: Undefined variable: a in /in/iURuu on line 7
bad