您也可以使用过滤器.从手册页:
<?php
$params = array('level' => 6, 'window' => 15, 'memory' => 9);
$original_text = "You SQL queries here...";
$fp = fopen('yourfile.sql.gz', 'w');
stream_filter_append($fp, 'zlib.deflate', STREAM_FILTER_WRITE, $params);
fwrite($fp, $original_text);
fclose($fp);
?>
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