PHP Common detection function set (turn)

Functional PHP Universal Detection function set to http://wb.josetech.com/userHome/4/jaxp/add-ons/news/13/20020828/51.html
Publish time: 2002-08-28 17:52:33 News Source:

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"Warning": please do not change without permission
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//
"FileName": c_check.inc
"Role": a set of common detection functions
"Author": Sky Ash
//
"Last Modified Date": 2001/05/11[cxx]
"Variable definition rule": ' C_ ' = character type, ' i_ ' = integral type, ' n_ ' = numeric, ' L_ ' = boolean, ' a_ ' = number
Group type
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※checkmoney ($C _money) checks whether the data is
99999.99 format
※CHECKEMAILADDR ($C _mailaddr) to determine if it is a valid message
Access
※CHECKWEBADDR ($C _weburl) to determine whether it is a valid URL
※checkempty ($C _char) to determine whether the string is empty
※checklengthbetween ($C _char, $I _len1, $I _len2=100) determines whether the specified length of
String
※checkuser ($C _user) to determine whether a legitimate user name
※checkpassword ($C _passwd) to determine whether a legal user is secret
Code
※checktelephone ($C _telephone) to determine whether a legal telephone number
Code
※checkvaluebetween ($N _var, $N _val1, $N _val2) to determine whether a range of
Legal value
※checkpost ($C _post) to determine whether the legal ZIP code (solid
Fixed length)
※checkextendname ($C _filename, $A _extend) to determine the extension of the uploaded file
※checkimagesize ($ImageFileName, $LimitSize) Check the size of uploaded pictures
※alertexit ($C _alert, $I _goback=0) Illegal operation warning and exiting
※alert ($C _alert, $I _goback=0) Illegal operation warning
※replacespacialchar ($C _char) special character substitution function
※exchangemoney ($N _money) Capital conversion function
※windowlocation ($C _url, $C _get= "", $C _getother= "") Window.location in PHP
Function
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Function name: Checkmoney ($C _money)
Function: Check whether the data is 99999.99 format
Parameters: $C _money (number to be detected)
Return Value: Boolean value
Note: none
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function Checkmoney ($C _money)
{
if (!ereg ("^[0-9][.] [0-9]$ ", $C _money)) return false;
return true;
}
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Function name: checkemailaddr ($C _mailaddr)
Role: Determine if a valid mailing address
Parameters: $C _mailaddr (email address to be detected)
Return Value: Boolean value
Note: none
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function checkemailaddr ($C _mailaddr)
{
if (!eregi () ^[_a-z0-9-]+ (. [ _a-z0-9-]+) *@[a-z0-9-]+ (. [ a-z0-9-]+) *$ ",
$C _mailaddr))
(!ereg ("^[_a-za-z0-9-]+" (. [ _a-za-z0-9-]+) *@[_a-za-z0-9-]+ (. [ _a-za-z0-9-]+) *$ ",
$c _mailaddr))
{
return false;
}
return true;
}
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Function name: checkwebaddr ($C _weburl)
Role: To determine whether a valid Web site
Parameters: $C _weburl (URLs to be detected)
Return Value: Boolean value
Note: none
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function checkwebaddr ($C _weburl)
{
if (!ereg () ^http://[_a-za-z0-9-]+ (. [ _a-za-z0-9-]+) *$ ", $C _weburl))
{
return false;
}
return true;
}
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Function name: Checkempty ($C _char)
Role: Determine if the string is empty
Parameters: $C _char (string to be detected)
Return Value: Boolean value
Note: none
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function checkemptystring ($C _char)
{
if (!is_string ($C _char)) return false; Whether it is a string type
if (Empty ($C _char)) return false; Whether it has been set
if ($C _char== ') return false; is empty
return true;
}
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Function name: Checklengthbetween ($C _char, $I _len1, $I _len2=100)
Role: Determine whether the string within the specified length
Parameters: $C _char (string to be detected)
$I _len1 (lower bound of the length of the target string)
$I _len2 (upper limit of target string length)
Return Value: Boolean value
Note: none
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function Checklengthbetween ($C _cahr, $I _len1, $I _len2=100)
{
$C _cahr = Trim ($C _cahr);
if (strlen ($C _cahr) < $I _len1) return false;
if (strlen ($C _cahr) > $I _len2) return false;
return true;
}
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Function name: CheckUser ($C _user)
Role: To determine whether a legitimate user name
Parameters: $C _user (user name to be detected)
Return Value: Boolean value
Note: none
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function CheckUser ($C _user)
{
if (! Checklengthbetween ($C _user, 4)) return false; Width test
if (!ereg ("^[_a-za-z0-9]*$", $C _user)) return false; Special character test
return true;
}
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Function name: Checkpassword ($C _passwd)
Role: Determine if the password is a legitimate user
Parameters: $C _passwd (password to be detected)
Return Value: Boolean value
Note: none
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function Checkpassword ($C _passwd)
{
if (! Checklengthbetween ($C _passwd, 4)) return false; Width detection
if (!ereg ("^[_a-za-z0-9]*$", $C _passwd)) return false; Special character detection
return true;
}
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Function name: Checktelephone ($C _telephone)
Role: To determine whether a legal telephone number
Parameters: $C _telephone (phone number to be detected)
Return Value: Boolean value
Note: none
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function Checktelephone ($C _telephone)
{
if (!ereg ("^[+]?[ 0-9]+ ([xx-][0-9]+) *$ ", $C _telephone)) return false;
return true;
}
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Function name: Checkvaluebetween ($N _var, $N _val1, $N _val2)
Role: To determine whether a range of legal values
Parameters: $N _var value to be detected
$N the upper limit of the _VAR1 value to be detected
$N _var2 the lower bound of the value to be detected
Return Value: Boolean value
Note: none
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function Checkvaluebetween ($N _var, $N _val1, $N _val2)
{
if ($N _var < $N _var1││ $N _var > $N _var2)
{
return false;
}
return true;

}
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Function name: checkpost ($C _post)
Role: To determine whether the legal ZIP code (fixed length)
Parameters: $C _post (zip code to check)
Return Value: Boolean value
Note: none
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function checkpost ($C _post)
{
$C _post=trim ($C _post);
if (strlen ($C _post) = = 6)
{
if (!ereg ("^[+]?[ _0-9]*$ ", $C _post))
{
return true;;;
}else
{
return false;
}
}else
{
return false;;;
}
}
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Function name: Checkextendname ($C _filename, $A _extend)
Role: Upload file extension to determine the name
Parameters: $C _filename uploaded file name
$A extension required by _extend
Return Value: Boolean value
Note: none
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function Checkextendname ($C _filename, $A _extend)
{
if (strlen ($C _filename)) < 5)
{
return 0; return 0 means no pictures uploaded
}
$lastdot = Strrpos ($C _filename, "."); Take out. The last place to appear
$extended = substr ($C _filename, $lastdot + 1); Remove extension

For ($i =0 $i <count ($A _extend), $i + +)//For testing
{
if (Trim (Strtolower ($extended)) = = Trim (Strtolower ($A _extend[$i)))//Convert Large
Lowercase and detects
{
$flag = 1; Plus success Sign
$i =count ($A _extend); Stop detection when detected.
}
}

if ($flag <>1)
{
For ($j =0 $j <count ($A _extend); $j + +)//list the types of extensions allowed to upload
{
$alarm. = $A _extend[$j]. " ";
}
Alertexit (' Upload only '. $alarm. ' File! And you're uploading a '. $extended. ' Type of file ');
return-1; Return-1 indicates the type of upload image does not match
}

return 1; Returns 1 indicating that the type of the picture meets the requirements
}
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Function name: Checkimagesize ($ImageFileName, $LimitSize)
Role: Check the size of uploaded pictures
Parameters: $ImageFileName uploaded picture name
Size of $LimitSize requirements
Return Value: Boolean value
Note: none
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function Checkimagesize ($ImageFileName, $LimitSize)
{
$size =getimagesize ($ImageFileName);
if ($size [0]> $LimitSize [0]││ $size [1]> $LimitSize [1])
{
Alertexit (' picture size too big ');
return false;
}
return true;
}
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Function name: Alert ($C _alert, $I _goback=0)
Role: illegal Operation warning
Parameters: $C _alert (Error message for prompts)
$I _goback (back to that page)
return value: String
Note: none
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function Alert ($C _alert, $I _goback=0)
{
if ($I _goback<>0)
{
echo "<script>alert (' $C _alert '); History.go ($I _goback);</script>";
}
Else
{
echo "<script>alert (' $C _alert ');</script>";
}
}
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Function name: Alertexit ($C _alert, $I _goback=0)
Role: illegal Operation warning
Parameters: $C _alert (Error message for prompts)
$I _goback (back to that page)
return value: String
Note: none
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function Alertexit ($C _alert, $I _goback=0)
{
if ($I _goback<>0)
{
echo "<script>alert (' $C _alert '); History.go ($I _goback);</script>";
Exit
}
Else
{
echo "<script>alert (' $C _alert ');</script>";
Exit
}
}
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Function name: Replacespacialchar ($C _char)
Function: Special character substitution function
Parameters: $C _char (strings to be replaced)
return value: String
Note: none
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function Replacespecialchar ($C _char)
{
$C _char=htmlspecialchars ($C _char); Converts a special character into HTML format.
$C _char=nl2br ($C _char); Replace the carriage return with the <br>
$C _char=str_replace ("", "", $C _char); Replace a space with
$C _char=str_replace ("A;?", "<", $C _char); Replace PHP tags
return $C _char;
}
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Function name: Exchangemoney ($N _money)
Function: Capital Conversion functions
Parameters: $N _money (number of amounts to convert)
return value: String
Note: This function example: $char =exchangemoney (5645132.3155) ==>
$char = ' ￥5,645,132.31 '
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function Exchangemoney ($N _money)
{
$A _tmp=explode (".", $N _money); Divide the number into two parts by a decimal point and save it in an array $a_tmp
$I _len=strlen ($A _tmp[0]); Measure the width of the number of digits before the decimal point

if ($I _len%3==0)
{
$I _step= $I _LEN/3; such as the width of the front digits mod 3 = 0, can be pressed, divided into $i_step
Part
}else
{
$step = ($len-$len%3)/3+1; such as the width of the front digits mod 3!= 0, can be pressed, divided into $i_step
Part +1
}

$C _cur= "";
Convert the amount number before the decimal point
while ($I _len<>0)
{
$I _step--;

if ($I _step==0)
{
$C _cur. = substr ($A _tmp[0],0, $I _len-($I _step) *3);
}else
{
$C _cur. = substr ($A _tmp[0],0, $I _len-($I _step) *3). ",";
}

$A _tmp[0]=substr ($A _tmp[0], $I _len-($I _step) *3);
$I _len=strlen ($A _tmp[0]);
}

Convert the amount after the decimal point
if ($A _tmp[1]== "")
{
$C _cur. = ". 00";
}else
{
$I _len=strlen ($A _tmp[1]);
if ($I _len<2)
{
$C _cur. = ".". $A _tmp[1]. " 0 ";
}else
{
$C _cur. = ".". substr ($A _tmp[1],0,2);
}
}

Plus RMB symbol and outgoing
$C _cur= "￥". $C _cur;
return $C _cur;
}
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Function name: windowlocation ($C _url, $C _get= "", $C _getother= "")
Function: window.location function in PHP
Parameters: $C _url to the URL of the window
$C _get Get method parameters
$C other parameters for the _getother get method
return value: String
Note: none
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function Windowlocation ($C _url, $C _get= "", $C _getother= "")
{
if ($C _get = "" && $C _getother = "")
if ($C _get = = "" && $C _getother <> "") {$C _target= ' window.location= ' $C _url?
$C _getother= ' +this.value ' ";}
if ($C _get <> "" && $C _getother = = "") {$C _target= ' window.location= ' $C _url?
$C _get ' "";}
if ($C _get <> "&& $C _getother <>") {$C _target= "window.location= ' $C _url?
$C _get& $C _getother= ' +this.value ';}
return $C _target;
}
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