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<?php class F extends php_user_filter { public function onCreate() { echo 'filter onCreate' . PHP_EOL; return true; } public function onClose() { echo 'filter onClose' . PHP_EOL; } public function filter($in, $out, &$consumed, $closing) { while ($bucket = stream_bucket_make_writeable($in)) { $bucket->data = strtoupper($bucket->data); $consumed += $bucket->datalen; stream_bucket_append($out, $bucket); } echo 'filtered ' . ($consumed ? $consumed : 0) . ' bytes'; if ($closing) { echo ' and closing.'; } else { echo '.'; } if (feof($this->stream)) { echo ' Stream has reached end-of-file.'; } echo PHP_EOL; return PSFS_PASS_ON; } } stream_filter_register('f', 'F'); $str = str_repeat('a', 8320); echo 'tmpfile()' . PHP_EOL; $f1 = tmpfile(); fwrite($f1, $str); fseek($f1, 0, SEEK_SET); stream_filter_append($f1, 'f', STREAM_FILTER_READ); echo stream_get_contents($f1) . PHP_EOL; fclose($f1); echo PHP_EOL . PHP_EOL; echo 'php://temp' . PHP_EOL; $f2 = fopen('php://temp', 'r+b'); fwrite($f2, $str); fseek($f2, 0, SEEK_SET); stream_filter_append($f2, 'f', STREAM_FILTER_READ); echo stream_get_contents($f2) . PHP_EOL; fclose($f2); echo PHP_EOL . PHP_EOL; echo 'php://memory' . PHP_EOL; $f3 = fopen('php://memory', 'r+b'); fwrite($f3, $str); fseek($f3, 0, SEEK_SET); stream_filter_append($f3, 'f', STREAM_FILTER_READ); echo stream_get_contents($f3) . PHP_EOL; fclose($f3); echo PHP_EOL;

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