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run code in 300+ PHP versions simultaneously
<?php echo 'Testing ' . 1 + 2 . '45';
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Testing 345
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Deprecated: The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /in/52uC2 on line 2 Warning: A non-numeric value encountered in /in/52uC2 on line 2 245
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.26
Warning: A non-numeric value encountered in /in/52uC2 on line 2 245
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
245

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