How to use PHP regular expressions to verify whether the input string is in the correct unified social credit code or organization code format

With the continuous development and growth of enterprises, the role of unifying social credit codes and organizational codes is becoming more and more important. Therefore, when developing enterprise-level applications, it is often necessary to use PHP regular expressions to verify whether the unified social credit code or organizational code entered by the user complies with the specifications to ensure the accuracy and completeness of the data. This article will introduce how to use PHP regular expressions to verify the format of the unified social credit code or organization code.

The Unified Social Credit Code (hereinafter referred to as the "Uniform Code") is implemented by the State Administration for Industry and Commerce on May 1, 2015. It consists of 18 digits or capital letters (excluding I, O, Z, S, V) codes. Compared with the previous 15-digit or 14-digit organizational codes, the Unicode has more digits and more complex combinations, and can better meet the needs of enterprise management and informatization.

Organization Code (hereinafter referred to as "Organization Code") is an organization code stipulated in the national standard GB11714-1997, consisting of 9 digits and 1 digit check code. Organization code is an important code for enterprise operation and related department management, and is widely used in various business activities.

In order to verify whether the input string is in the correct Unicode or Organization Code format, we need to first understand its rules.

1. Unicode format rules

(1) The first digit is the registration management department code, and 9 represents the industrial and commercial department;

(2) The second digit The digit is the organization type code, 1 represents the agency, 2 represents the public institution, 3 represents the enterprise, and 9 represents other;

(3) The third digit is the administrative division code of the registration management agency, indicating the administrative division of the registration management agency. Division code;

(4) The 4th to 17th digits are the body code, which consists of numbers or capital letters (excluding I, O, Z, S, V), and has certain logical rules;

(5) The 18th digit is the check code, calculated based on the ISO 7064:1983.MOD 11-2 check character.

2. Organization code format rules

(1) The 1st to 8th digits are the registration management department code, issued by the industrial and commercial administration department;

(2) The 9th digit is the check code, calculated based on the ISO 7064:1983.MOD 11-2 check character.

After understanding the rules, you can use PHP regular expressions to verify strings.

1. The Unicode verification regular expression is as follows:

$pattern = "/^[1-9]d{5}[1-9A-HJ-NPQRTUWXY] {2}d{6}[0-9A-HJ-NPQRTUWXY]$/";

2. Organization code verification regular expression is as follows:

$pattern = " /^[0-9]{8}[A-Za-z0-9]{1}$/";

Among them, /^[1-9]d{5}[1-9A- HJ-NPQRTUWXY]{2}d{6}[0-9A-HJ-NPQRTUWXY]$/ is a regular expression used to verify Unicode, /^[0-9]{8}[A-Za-z0- 9]{1}$/ is a regular expression used to verify the organization code.

We can use the preg_match() function to execute regular expressions and determine whether the input string conforms to the rules:

//Verify Unicode
if(preg_match($pattern, $unified_code )){

echo "输入的统一社会信用代码格式正确";

} else {

echo "输入的统一社会信用代码格式不正确";

}

//Verification organization code
if(preg_match($pattern, $organization_code)){

echo "输入的组织机构代码格式正确";

} else {

echo "输入的组织机构代码格式不正确";

}

$unified_code and $organization_code in the above code are the unified code and organization code input by the user respectively.

Summary:

PHP regular expressions can easily verify the format of Unicode and organization codes, providing good data verification and standardized management functions for enterprise-level applications. When writing business logic, developers should fully consider the standardization and accuracy of the data format to ensure the stability and reliability of the system.

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