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

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php_strip_whitespace
Misc. Functions
PHP Manual

# php_check_syntax

(PHP 5 <= 5.0.4)

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

### Description

bool php_check_syntax ( string `$filename` [, string `&$error_message` ] )

Performs a syntax (lint) check on the specified `filename` testing for scripting errors.

This is similar to using php -l from the commandline except that this function will execute (but not output) the checked `filename`.

For example, if a function is defined in `filename`, this defined function will be available to the file that executed php_check_syntax(), but output from `filename` will be suppressed.

> Note:

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

### Parameters

`filename`

  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.

### Return Values

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

### Changelog

Version | Description
--- | ---
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.

### Examples

    php -l somefile.php

The above example will output something similar to:

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

### See Also

- include - include
- is_readable() - Tells whether a file exists and is readable

pack
php_strip_whitespace
Misc. Functions
PHP Manual