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run code in 200+ PHP versions simultaneously
<?php function test($a) { fwrite($a, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'); fseek($a, 0); fwrite($a, '1234567890'); fseek($a, 0); var_dump(fread($a, 1024)); fclose($a); } $a = fopen('php://temp', 'a+'); test($a); echo '-------------------' . PHP_EOL; $a = fopen(tempnam(sys_get_temp_dir(), "hello"), 'a+'); test($a);
Output for 7.3.0 - 7.4.6
string(36) "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890" ------------------- string(36) "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
Output for 7.0.0 - 7.2.25
string(26) "1234567890KLMNOPQRSTUVWXYZ" ------------------- string(36) "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"