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PHP: Function Called empty – CPanel

I receive a weird error when testing a WordPress plugin I developed on my server.

I tested locally with PHP5.3.29 (PHPBrew) and PHP7. I get the following error

Parse error: syntax error, unexpected 'empty' (T_EMPTY), expecting identifier (T_STRING) in /home/arevicoc/sub_domains/fitmetfriso.nl/wp-content/plugins/wp-clickbank-vendor/core/Helper/Util.php on line 65

The function itself is rather simple (i get the error on the definition of the function

/**
 * Check if it is empty for a multi-dimensional array
 *
 * @param object $object
 * @param string $name
 * @return void
 */
public static function empty($object, $name){ // Line 65
    return empty(self::val($object,$name, null));
}

CPanel of the server I’ve been testing on lists ea-php55.

Why is this error occurring? I know empty is a function in PHP, but if inside a namespace, there shouldn’t be a conflict right? especially since it works in development.

Any reason why this use of reserved keywords as class function name is allowed in php 7?

Thank you in advance 🙂

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4

Answers


  1. 0

    I am not sure but maybe you have to change your function’s name from empty to something else. It can be built-in function.

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  2. 0

    Your issue is the function name itself.
    In PHP, there’s already a generic function called empty() . So overwriting is causing the issue.

    As per manual,
    http://php.net/manual/en/function.empty.php

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  3. 0

    You cannot use empty() as your function name, because it’s a reserved keyword. Here is list of keywords, that you can’t use to define as your function names: http://php.net/manual/en/reserved.keywords.php

    From the documentation:

    You cannot use any of the following words as constants, class names,
    function or method names.

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  4. 0

    empty is a reserved keyword you can not use for the name of a function :
    http://php.net/manual/en/reserved.keywords.php

    The doc says :

    You cannot use any of the following words as constants, class names, function or method names.

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