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<?php var_dump(NAN); // float NAN var_dump(NAN == NAN); // boolean true var_dump(NAN === NAN); // boolean true var_dump(is_nan(NAN)); // boolean true var_dump(NAN == 12); // boolean true var_dump(NAN === 12); // boolean false var_dump(is_nan(12)); // boolean false var_dump(NAN == 12.4); // boolean true var_dump(NAN === 12.4); // boolean true var_dump(is_nan(12.4)); // boolean false var_dump(NAN == NULL); // boolean true var_dump(NAN === NULL); // boolean false var_dump(is_nan(NULL)); // boolean false
Output for git.master, git.master_jit, rfc.property-hooks
float(NAN) bool(false) bool(false) bool(true) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) Deprecated: is_nan(): Passing null to parameter #1 ($num) of type float is deprecated in /in/Rp1FB on line 19 bool(false)

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