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# php_check_syntax

(PHP 5)

php_check_syntax -- Check the PHP syntax of (and execute) the specified file

## 说明

bool php_check_syntax ( string file_name [, string &error_message] )

For technical reasons, this function is deprecated and removed from PHP. Instead, use php -l somefile.php from the commandline.

The php_check_syntax() function performs a syntax (lint) check on the specified filename testing for scripting errors. This is similar to using php -l from the commandline except php_check_syntax() will execute (but not output) the checked file_name. For example, if a function is defined in file_name, this defined function will be available to the file that executed php_check_syntax(), but output from file_name will be suppressed.

## 参数

file_name

  The name of the file being checked.

error_message

  If the error_message parameter is used, it will contain the error message generated by the syntax check. error_message is passed by reference.

## 返回值

Returns `TRUE` if the lint check passed, and `FALSE` if the link check failed or if file_name cannot be opened.

## 更新日志

版本 | 说明
--- | ---
5.0.5 | This function was removed from PHP.
5.0.3 | Calling exit() after php_check_syntax() resulted in a Segfault.
5.0.1 | error_message is passed by reference.

## 例

    php -l somefile.php

上例的输出类似于：

    PHP Parse error: unexpected T_STRING in /tmp/somefile.php on line 81

## 参见

include()
is_readable()

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