Gets the best way of encoding

# mailparse_determine_best_xfer_encoding

(PECL mailparse >= 0.9.0)

mailparse_determine_best_xfer_encoding — Gets the best way of encoding

### 说明

function mailparse_determine_best_xfer_encoding(resource `$fp`): string

Figures out the best way of encoding the content read from the given file pointer.

### 参数

`fp`
  A valid file pointer, which must be seek-able.

### 返回值

Returns one of the character encodings supported by the mbstring module.

### 示例

示例 #1 mailparse_determine_best_xfer_encoding() example

    <?php

    $fp = fopen('somemail.eml', 'r');
    echo 'Best encoding: ' . mailparse_determine_best_xfer_encoding($fp);

    ?>

以上示例的输出类似于：

    Best encoding: 7bit

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