PHP 手冊
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# highlight_file

(PHP 4 , PHP 5)

highlight_file -- Syntax highlighting of a file

## Description

mixed highlight_file ( string filename [, bool return] )

The highlight_file() function prints out a syntax highlighted version of the code contained in filename using the colors defined in the built-in syntax highlighter for PHP.

If the second parameter return is set to `TRUE` then highlight_file() will return the highlighted code as a string instead of printing it out. If the second parameter is not set to `TRUE` then highlight_file() will return `TRUE` on success, `FALSE` on failure.

> 注: The return parameter became available in PHP 4.2.0. Before this time it behaved like the default, which is `FALSE`

> 注: Since PHP 4.2.1 this function is also affected by safe_mode and open_basedir.

注意
Care should be taken when using the highlight_file() function to make sure that you do not inadvertently reveal sensitive information such as passwords or any other type of information that might create a potential security risk.

Many servers are configured to automatically highlight files with a phps extension. For example, `example.phps` when viewed will show the syntax highlighted source of the file. To enable this, add this line to the `httpd.conf`:

    AddType application/x-httpd-php-source .phps

See also highlight_string().

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