PHP user name, password, phone number, legal judgment code

The article has three commonly used functions, respectively, is to determine whether it is a legitimate user name, to determine whether it is a legitimate user password, determine whether it is a legitimate telephone number, these three is the development of the function, the example code is as follows:

Function name: CheckUser ($C _user)

Role: Determine whether a valid user name

Parameters: $C _user (user name to be detected)

Return Value: Boolean value

Remark: None

function CheckUser ($C _user)

{

if (! Checklengthbetween ($C _user, 4,)) return false; Width test

if (!ereg ("^[_a-za-z0-9]*$", $C _user)) return false; Special character test

return true;

}

Function name: Checkpassword ($C _passwd)

Role: Determine if the password is a valid user

Parameters: $C _passwd (password to be detected)

Return Value: Boolean value

Remark: None

/

function Checkpassword ($C _passwd)

{

if (! Checklengthbetween ($C _passwd, 4,)) return false; Width detection

if (!ereg ("^[_a-za-z0-9]*$", $C _passwd)) return false; Special character detection

return true;

}

Function name: Checktelephone ($C _telephone)

Role: Determine whether a legal phone number

Parameters: $C _telephone (phone number to be detected)

Return Value: Boolean value

Remark: None

//-----------------------------------------------------------------------------------

function Checktelephone ($C _telephone)

{

if (!ereg ("^[+]?[ 0-9]+ ([xx-][0-9]+) *$ ", $C _telephone)) return false;

return true;

}

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