Page 1/3 of php universal detection function set

<?
// [Warning]: do not modify it without permission
// Configure //-----------------------------------------------------------------------------------
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// Configure //-----------------------------------------------------------------------------------
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//
// [File name]: c_check.inc
// [For use]: universal detection function set
// [Operator]: tianyao
//
// [Last modification date]: 2001/05/11 [cxx]
// [Variable definition rules]: 'C _ '= numeric type,' I _ '= integer type, 'n' _' = numeric type, 'l _ '= boolean type, 'A _ '= Number
Group type
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// ※Checkmoney ($ C_Money) checks whether the data is
Format 99999.99
// ※Checkemailaddr ($ C_mailaddr) determines whether the email is a valid email address.
Address
// ※Checkwebaddr ($ C_weburl)
// ※Checkempty ($ C_char) determines whether the string is null.
// ※Checklengthbetween ($ C_char, $ I _len1, $ I _len2 = 100) determines whether it is within the specified length.
String
// ※Checkuser ($ C_user) determines whether the user name is valid.
// ※Checkpassword ($ C_passwd) determines whether the password is valid.
Code
// ※Checktelephone ($ C_telephone) determines whether the phone number is valid.
Code
// ※Checkvaluebetween ($ N_var, $ N_val1, $ N_val2) determines whether it is within a certain range.
Valid Value
// ※Checkpost ($ C_post) determines whether it is a legal zip code (fixed
Fixed Length)
// ※Checkextendname ($ C_filename, $ A_extend) indicates the extension of the uploaded file.
// ※Checkimagesize ($ ImageFileName, $ LimitSize) indicates the size of the uploaded image.
// ※Alertexit ($ C_alert, $ I _goback = 0) indicates an invalid operation and exits.
// ※Alert ($ C_alert, $ I _goback = 0) indicates an invalid operation warning.
// ※Replacespacialchar ($ C_char) Special Character replacement function
// ※Exchangemoney ($ N_money) Fund Conversion Function
// ※Windowlocation ($ C_url, $ C_get = "", $ C_getOther = "") window. location in PHP
Function
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// Function name: CheckMoney ($ C_Money)
// For usage: Check whether the data is in the 99999.99 format
// Parameter: $ C_Money (number to be detected)
// Return value: Boolean
// Standby Note: None
// Configure //-----------------------------------------------------------------------------------
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Function CheckMoney ($ C_Money)
{
If (! Ereg ("^ [0-9] [.] [0-9] $", $ C_Money) return false;
Return true;
}
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// Function name: CheckEmailAddr ($ C_mailaddr)
// Usage: determines whether the email address is a valid email address.
// Parameter: $ C_mailaddr (email address to be detected)
// Return value: Boolean
// Standby Note: None
// Configure //-----------------------------------------------------------------------------------
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Function CheckEmailAddr ($ C_mailaddr)
{
If (! Eregi ("^ [_ a-z0-9-] + (. [_ a-z0-9-] +) * @ [a-z0-9-] + (. [a-z0-9-] +) * $ ",
$ C_mailaddr ))
//(! Ereg ("^ [_ a-zA-Z0-9-] + (. [_ a-zA-Z0-9-] +) * @ [_ a-zA-Z0-9-] + (. [_ a-zA-Z0-9-] +) * $ ",
$ C_mailaddr ))
{
Return false;
}
Return true;
}
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// Configure //-----------------------------------------------------------------------------------
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// Function name: CheckWebAddr ($ C_weburl)
// Usage: Determine whether the website is valid
// Parameter: $ C_weburl (URL to be detected)
// Return value: Boolean
// Standby Note: None
// Configure //-----------------------------------------------------------------------------------
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Function CheckWebAddr ($ C_weburl)
{
If (! Ereg ("^ http: // [_ a-zA-Z0-9-] + (. [_ a-zA-Z0-9-] +) * $", $ C_weburl ))
{
Return false;
}
Return true;
}
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// Configure //-----------------------------------------------------------------------------------
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// Function name: CheckEmpty ($ C_char)
// For usage: determines whether the string is null.
// Parameter: $ C_char (string to be detected)
// Return value: Boolean
// Standby Note: None
// Configure //-----------------------------------------------------------------------------------
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Function CheckEmptyString ($ C_char)
{
If (! Is_string ($ C_char) return false; // whether it is a string type
If (empty ($ C_char) return false; // whether it is set
If ($ C_char = '') return false; // whether it is null
Return true;
}
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// Configure //-----------------------------------------------------------------------------------
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// Function name: CheckLengthBetween ($ C_char, $ I _len1, $ I _len2 = 100)
// For usage: determines whether the string is within the specified length
// Parameter: $ C_char (string to be detected)
// $ I _len1 (lower limit of the target String Length)
// $ I _len2 (Maximum length of the target string)
// Return value: Boolean
// Standby Note: None
// Configure //-----------------------------------------------------------------------------------
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Function CheckLengthBetween ($ C_cahr, $ I _len1, $ I _len2 = 100)
{
$ C_cahr = trim ($ C_cahr );
If (strlen ($ C_cahr) <$ I _len1) return false;
If (strlen ($ C_cahr)> $ I _len2) return false;
Return true;
}
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// Configure //-----------------------------------------------------------------------------------
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// Function name: CheckUser ($ C_user)
// Usage: determines whether the user name is valid
// Parameter: $ C_user (user name to be detected)
// Return value: Boolean
// Standby Note: None
// Configure //-----------------------------------------------------------------------------------
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Function CheckUser ($ C_user)
{
If (! CheckLengthBetween ($ C_user, 4, 20) return false; // width check
If (! Ereg ("^ [_ a-zA-Z0-9] * $", $ C_user) return false; // special character check
Return true;
}
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// Configure //-----------------------------------------------------------------------------------
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// Function name: CheckPassword ($ C_passwd)
// Usage: determines whether the password is valid.
// Parameter: $ C_passwd (password to be detected)
// Return value: Boolean
// Standby Note: None
// Configure //-----------------------------------------------------------------------------------
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Function CheckPassword ($ C_passwd)
{
If (! CheckLengthBetween ($ C_passwd, 4, 20) return false; // width Detection
If (! Ereg ("^ [_ a-zA-Z0-9] * $", $ C_passwd) return false; // special character Detection
Return true;
}
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