How does php check whether a string contains 7-bit GSM characters
This article will explain in detail how php checks whether the string contains 7-bit GSM characters. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.
The specific analysis is as follows:
The following code checks whether a string contains any 7-bit GSM characters. It is very useful for people who work on the SMS platform.
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