Both are correct.

The following code checks for the correct number of arguments

PHP doesn't make use of any formal function declarations this is why call syntax is always completely dynamic and never checked for errors. Checking for correct call syntax is left to the user code. For example, it's possible to call a function using only one argument at one time and four arguments the next time both invocations are syntactically absolutely correct.

解析命令出错the url to the documentation of R, please check if there is a translated version and use the correct url

The behavior when an empty part was found changed with PHP 4.1.0. The old behavior returned an empty string, while the new, correct, behavior simply skips the part of the string

In order for this to work, your browscap configuration setting in php.ini must point to the correct location of the browscap.ini file on your system. browscap.ini is not bundled with PHP but you may find an up to date browscap.ini file here. By default, the browscap directive is commented out.

This function allows sending of emails with correct handling of Cc and Bcc receivers. The parameters to, cc and bcc are all strings and are all parsed as rfc822 address lists. The receivers specified in bcc will get the mail, but are excluded from the headers. Use the rpath parameter to specify return path. This is useful when using php as a mail client for multiple users.

蛁 Some OmniHTTPd packages come with built in PHP support. You can choose at setup time to do a custom setup, and uncheck the PHP component. We recommend you to use the latest PHP binaries. Some OmniHTTPd servers come with PHP 4 beta distributions, so you should choose not to set up the built in support, but install your own. If the server is already on your machine, use the Replace button in Step 4 and 5 to set the new, correct information.