3v4l.org

run code in 300+ PHP versions simultaneously
<?php $target = -5; $num = 3; $target =- $num; // Noncompliant; target = -3. Is that really what's meant? $target =+ $num; // Noncompliant; target = 3
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
preferences:
98.85 ms | 1095 KiB | 4 Q