<?php $testString = 'test'; $stream = fopen('php://memory','r+'); fwrite($stream, $testString); rewind($stream); $filter = stream_filter_append($stream, 'convert.base64-encode'); $memoryStream = stream_get_contents($stream); $fileStream = tmpfile(); fwrite($fileStream , $testString); rewind($fileStream ); $filter = stream_filter_append($fileStream , 'convert.base64-encode'); $fileStream = stream_get_contents($fileStream ); if (strcmp($memoryStream, $fileStream) == 0) { printf("Set BUG68532FIXED to true in your config.php\n"); } else { printf("Your PHP suffers Bug 68532, so you should leave BUG68532FIXED as false in your config.php\n"); }