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<?php // in the first expression $a + $a++; // "++" has higher precedence than "+", so "$a++" is grouped: $a + ($a++); // in the second expressions $a + $a + $a++; // "++" again has higher precedence than "+": $a + $a + ($a++); // and "+" is a left-associative operator, so the left "+" is grouped: ($a + $a) + ($a++);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $a in /in/VbAqY on line 4
Output for 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, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: a in /in/VbAqY on line 4
Output for 7.3.32 - 7.3.33, 7.4.26
preferences:
219.46 ms | 401 KiB | 412 Q