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run code in 300+ PHP versions simultaneously
<?php var_dump('{!' . 3 . '}'); var_dump('{!' . (string)2 + 1 . '}');
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
string(4) "{!3}" string(4) "{!3}"
Output for 7.4.0 - 7.4.33
Deprecated: The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /in/rgRHP on line 4 string(4) "{!3}" Warning: A non-numeric value encountered in /in/rgRHP on line 4 string(2) "1}"
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
string(4) "{!3}" Warning: A non-numeric value encountered in /in/rgRHP on line 4 string(2) "1}"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 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
string(4) "{!3}" string(2) "1}"

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