3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function generateTmpFilename(): string { $filename = sys_get_temp_dir().'/'.bin2hex(random_bytes(16)).'.tmp'; touch($filename); return $filename; } $tmpFilename = generateTmpFilename(); $f = fopen($tmpFilename, 'rwb'); # this is the only difference fwrite($f, 'Woop die loop'); fwrite($f, 'Scoop'); fclose($f); # Note that this is empty output var_dump(file_get_contents($tmpFilename)); $tmpFilename = generateTmpFilename(); $f = fopen($tmpFilename, 'wrb'); # this is the only difference fwrite($f, 'I ate'); fwrite($f, 'Noogie'); fclose($f); # And this one contains expected text var_dump(file_get_contents($tmpFilename));
based on VuZs6
Output for hhvm-3.11.1 - 3.22.0, 7.0.0 - 7.3.4
string(0) "" string(11) "I ateNoogie"
Output for hhvm-3.10.1
Fatal error: Syntax only allowed in Hack files (<?hh) or with -v Eval.EnableHipHopSyntax=true in /in/V6088 on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/V6088 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':', expecting '{' in /in/V6088 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/V6088 on line 3
Process exited with code 255.