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<?php $a = new stdClass; $a->b = 1; echo 'Without isset.....'."\n";; var_dump(isset($a)); var_dump(isset($a->b)); var_dump(isset($a->b->c)); var_dump(isset($a->b->c->d)); var_dump(isset($a->b->c->d->e)); echo 'Without isset.....'."\n"; var_dump($a); var_dump($a->b); var_dump($a->b->c); var_dump($a->b->c->d); var_dump($a->b->c->d->e);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Without isset..... bool(true) bool(true) bool(false) bool(false) bool(false) Without isset..... object(stdClass)#1 (1) { ["b"]=> int(1) } int(1) Warning: Attempt to read property "c" on int in /in/coRIE on line 18 NULL Warning: Attempt to read property "c" on int in /in/coRIE on line 19 Warning: Attempt to read property "d" on null in /in/coRIE on line 19 NULL Warning: Attempt to read property "c" on int in /in/coRIE on line 20 Warning: Attempt to read property "d" on null in /in/coRIE on line 20 Warning: Attempt to read property "e" on null in /in/coRIE on line 20 NULL
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Without isset..... bool(true) bool(true) bool(false) bool(false) bool(false) Without isset..... object(stdClass)#1 (1) { ["b"]=> int(1) } int(1) Notice: Trying to get property 'c' of non-object in /in/coRIE on line 18 NULL Notice: Trying to get property 'c' of non-object in /in/coRIE on line 19 Notice: Trying to get property 'd' of non-object in /in/coRIE on line 19 NULL Notice: Trying to get property 'c' of non-object in /in/coRIE on line 20 Notice: Trying to get property 'd' of non-object in /in/coRIE on line 20 Notice: Trying to get property 'e' of non-object in /in/coRIE on line 20 NULL
Output for 7.3.32 - 7.3.33
Without isset..... bool(true) bool(true) bool(false) bool(false) bool(false) Without isset..... object(stdClass)#1 (1) { ["b"]=> int(1) } int(1) NULL NULL NULL
Output for 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Without isset..... bool(true) bool(true) bool(false) bool(false) bool(false) Without isset..... object(stdClass)#1 (1) { ["b"]=> int(1) } int(1) Notice: Trying to get property of non-object in /in/coRIE on line 18 NULL Notice: Trying to get property of non-object in /in/coRIE on line 19 Notice: Trying to get property of non-object in /in/coRIE on line 19 NULL Notice: Trying to get property of non-object in /in/coRIE on line 20 Notice: Trying to get property of non-object in /in/coRIE on line 20 Notice: Trying to get property of non-object in /in/coRIE on line 20 NULL
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.5
Without isset..... bool(true) bool(true) bool(false) Notice: Trying to get property of non-object in /in/coRIE on line 10 bool(false) Notice: Trying to get property of non-object in /in/coRIE on line 11 Notice: Trying to get property of non-object in /in/coRIE on line 11 bool(false) Without isset..... object(stdClass)#1 (1) { ["b"]=> int(1) } int(1) Notice: Trying to get property of non-object in /in/coRIE on line 18 NULL Notice: Trying to get property of non-object in /in/coRIE on line 19 Notice: Trying to get property of non-object in /in/coRIE on line 19 NULL Notice: Trying to get property of non-object in /in/coRIE on line 20 Notice: Trying to get property of non-object in /in/coRIE on line 20 Notice: Trying to get property of non-object in /in/coRIE on line 20 NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Without isset..... bool(true) bool(true) bool(false) bool(false) bool(false) Without isset..... object(stdClass)(1) { ["b"]=> int(1) } int(1) NULL NULL NULL
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