Streams data from source file pointer, apply encoding and write to destfp

# mailparse_stream_encode

(PECL mailparse >= 0.9.0)

mailparse_stream_encode — Streams data from source file pointer, apply encoding and write to destfp

### 说明

function mailparse_stream_encode(resource `$sourcefp`, resource `$destfp`, string `$encoding`): bool

Streams data from the source file pointer, apply `encoding` and write to the destination file pointer.

### 参数

`sourcefp`
  A valid file handle. The file is streamed through the parser.
`destfp`
  The destination file handle in which the encoded data will be written.
`encoding`
  One of the character encodings supported by the mbstring module.

### 返回值

成功时返回 `true`， 或者在失败时返回 `false`。

### 示例

示例 #1 mailparse_stream_encode() example

    <?php

    // email.eml contents: hello, this is some text=hello.
    $fp = fopen('email.eml', 'r');

    $dest = tmpfile();

    mailparse_stream_encode($fp, $dest, "quoted-printable");

    rewind($dest);

    // Display new file contents
    fpassthru($dest);

    ?>

以上示例会输出：

    hello, this is some text=3Dhello.

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