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<?php function test($n) { $r = $n-$n; $b = ($r===0)?true:false; return $b; } $b = test('a12'); echo $b;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: Unsupported operand types: string - string in /in/vo0Cu:5 Stack trace: #0 /in/vo0Cu(9): test('a12') #1 {main} thrown in /in/vo0Cu on line 5
Process exited with code 255.
Output for 7.1.5 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: A non-numeric value encountered in /in/vo0Cu on line 5 1
Output for 7.1.0
Warning: A non-numeric value encountered in /in/vo0Cu on line 5 Warning: A non-numeric value encountered in /in/vo0Cu on line 5 1
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
1

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142.01 ms | 402 KiB | 179 Q