php echo字符串直接下载

<code><span>$text</span><span>=</span><span>"字符串直接下载"</span>;
    <span>$fileName</span><span>=</span><span>"xxx.txt"</span>;
    <span>header</span>(<span>"Content-Type: application/txt"</span>);
    <span>header</span>(<span>"Content-Disposition: attachment; filename="</span><span>.</span><span>$fileName</span>);
    echo <span>$text</span>;
</code>

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