3v4l.org

run code in 300+ PHP versions simultaneously
<?php class test { const max = 5; protected $_c = 0; public function tst() { $this->_c = ($this->_c + 1) % self::max; if ($this->_c === 0) echo '!'.PHP_EOL; } } $t = new test(); for ($i=0; $i<16; $i++) { echo $i.' '; $t->tst(); }
Output for 5.0.2 - 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, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
0 1 2 3 4 ! 5 6 7 8 9 ! 10 11 12 13 14 ! 15
Output for 5.0.0 - 5.0.1
0 1 2 3 4 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/hQcoZ on line 11 !PHP_EOL5 6 7 8 9 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/hQcoZ on line 11 !PHP_EOL10 11 12 13 14 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/hQcoZ on line 11 !PHP_EOL15
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/hQcoZ on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/hQcoZ on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/hQcoZ on line 4
Process exited with code 255.

preferences:
289.81 ms | 401 KiB | 456 Q