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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(is_a("Exception", "Iterator")); var_dump(is_a("Iterator", "Traversable")); var_dump(is_a("Traversable", "Iterator"));
Output for 4.3.0 - 4.4.9, 5.3.0 - 5.3.6, 5.3.9 - 7.2.6
bool(false) bool(false) bool(false)
Output for 5.3.7 - 5.3.8
bool(false) bool(true) bool(false)
Output for 5.0.0 - 5.2.17
Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /in/Yevdp on line 3 bool(false) Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /in/Yevdp on line 4 bool(false) Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /in/Yevdp on line 5 bool(false)