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<?php var_dump(is_numeric('1')); echo (1 ** '1') . "\n"; var_dump(is_numeric('1')); echo (2 ** '1.') . "\n"; var_dump(is_numeric('1.')); echo (3 ** '+1.0') . "\n"; var_dump(is_numeric('+1.0')); echo (4 ** '+1.0e') . "\n"; var_dump(is_numeric('+1.0e')); echo (5 ** '+1.0e0') . "\n"; var_dump(is_numeric('+1.0e0')); echo (6 ** '+1.0e0 ') . "\n"; var_dump(is_numeric('+1.0e0 ')); echo (7 ** '+1.0e0 x') . "\n"; var_dump(is_numeric('+1.0e0 x'));
Output for 8.1.28, 8.2.17 - 8.2.19, 8.3.4 - 8.3.7
bool(true) 1 bool(true) 2 bool(true) 3 bool(true) Warning: A non-numeric value encountered in /in/sYolO on line 11 4 bool(false) 5 bool(true) 6 bool(true) Warning: A non-numeric value encountered in /in/sYolO on line 17 7 bool(false)
preferences:
36.91 ms | 402 KiB | 13 Q