What are the keywords that are not php

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String is not the keyword of php. The keywords of php are: 1, abstract;2, and;3, array (); 4, as;5, break;6, callable;7, case;8, catch;9, class;10, clone and so on.

The operating environment of this paper: Windows7 system, PHP7.1, Dell G3.

Which is not the keyword of php?

String is not a keyword for php.

Php keyword list:

These words have special meanings in PHP. Some of them are like functions, some are like constants, but they are not real, they are just part of the language structure. You cannot use any of them as a constant, class name, function, or method name. But they can be used as class properties, constants, and class method names, or interface names and traits names, except that class cannot be used as a constant name.

Check the official keyword information of PHP:

Https://www.php.net/manual/zh/reserved.keywords.php

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