Example of Golang regular expression to determine mobile phone number or ID card method

1. What is a regular expression?

Regular expressions are text patterns that include normal characters (for example, letters between a to z) and special characters (called "metachars").

Regular expressions use a single string to describe and match a series of strings that match a syntactic rule.

2. Detailed code

1.Judge mobile phone number

Mobile phone number format:

The first digit must be 1 eleven numbers

The code is as follows (example):

// CheckMobile Check mobile phone numberfunc CheckMobile(phone string) bool {
	// Match rules	// ^1 The first position is one	// [345789]{1} followed by a number of 345789	// \\d \d Escape means the number {9} is connected to 9 bits	// $ ending character	regRuler := "^1[345789]{1}\\d{9}$"

	// Regular calling rules	reg := (regRuler)

	// Returns whether MatchString matches	return (phone)
}

2. Determine whether it is an ID card

The ID card format is:

15-digit or 18-digit number, when 18-digit number, the last digit may be X

The code is as follows (example):

// CheckIdCard check the ID cardfunc CheckIdCard(card string) bool {
	//18-bit ID card ^(\d{17})([0-9]|X)$	// Match rules	// (^\d{15}$) 15-digit ID card	// (^\d{18}$) 18-digit ID card	// (^\d{17}(\d|X|x)$) 18-bit ID card The last user with X	regRuler := "(^\\d{15}$)|(^\\d{18}$)|(^\\d{17}(\\d|X|x)$)"

	// Regular calling rules	reg := (regRuler)

	// Returns whether MatchString matches	return (card)
}

Supplement: Golang mobile phone number and email address

//Mobile phone number verification rulesfunc PhoneCheckRule() string {
	return "^1[3|4|5|6|7|8|9][0-9]\\d{8}$"
}

//Email Verification Rulesfunc EmailCheckRule() string {
	return "^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}$"
}

Summarize

Through the above two examples, you can easily understand how to use regularity in Golang.

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