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This article introduces the relevant knowledge of "strict_types=1 example Analysis in PHP declare". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

PHP states the role of declare (strict_types=1): strict_types=1 and turn on strict mode. The default is weak type check. For the difference between strict mode and normal mode, see the following code.

Code1:

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