How to realize the conversion from string type to number type in php

This article mainly shows you "php how to achieve string type digital to digital type", the content is easy to understand, clear, hope to help you solve doubts, the following let Xiaobian lead you to study and learn "php how to achieve string type digital to digital type" this article.

String type numeric to numeric type

$str = '123 str / method 1 (int) $str;// method 2 intval ($str); / / method 3 + $str

Methods 1 and 2 are cast, even if the string contains letters after numbers. The third method must be guaranteed to be a pure numeric string, otherwise an error will be reported.

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