1--TEST-- 2Using isset() with arrays 3--FILE-- 4<?php 5 6$array = [ 7 0 => true, 8 "a" => true, 9]; 10 11var_dump(isset($array[0])); 12 13var_dump(isset($array["a"])); 14 15var_dump(isset($array[false])); 16 17var_dump(isset($array[0.6])); 18 19var_dump(isset($array[true])); 20 21var_dump(isset($array[null])); 22 23var_dump(isset($array[STDIN])); 24 25try { 26 isset($array[[]]); 27} catch (TypeError $exception) { 28 echo $exception->getMessage() . "\n"; 29} 30 31try { 32 isset($array[new stdClass()]); 33} catch (TypeError $exception) { 34 echo $exception->getMessage() . "\n"; 35} 36?> 37--EXPECTF-- 38bool(true) 39bool(true) 40bool(true) 41bool(true) 42bool(false) 43bool(false) 44 45Warning: Resource ID#%d used as offset, casting to integer (%d) in %s on line %d 46bool(false) 47Illegal offset type in isset or empty 48Illegal offset type in isset or empty 49
