Php form verification code

Provides a php form verification and validation code.

Function validate ($ value, $ onoff = 0, $ type = 3, $ len = 100, $ msg = 'fill in error '){

If (trim ($ value )! = "") {// If there is any content

If (! Is_int ($ len ))
Exit ("<script language = javascript> alert ('length parameter is not number'); </script> ");

Preg_match_all ("/[xa0-xff]?. /", $ Value, $ arr); // mix Chinese and English to calculate the string length
$ QswhLen_v = count ($ arr [0]);
If ($ qswhLen_v> $ len)
{
Exit ("<script language = javascript> alert ('". $ msg. "n length error! '); </Script> ");
 
}

If ($ type = 0) {// if the type is 0, check whether the data is a number.
If (! Eregi ('^ [0-9] + $', $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n must be a number! '); </Script> ");
}
}
Else if ($ type = 1) {// if the type is 1, check whether the data is a letter.
If (! Eregi ('^ [a-zA-Z] + $', $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n must be a letter! '); </Script> ");
}
}
Else if ($ type = 2) {// if the type is 2, check whether the data is in Chinese.
If (! Eregi ("^ [". chr (0xa1). "-". chr (0xff). "] + $", $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n must be Chinese! '); </Script> ");
}
}
Else if ($ type = 3) {// if the type is 3, check whether the data is letters and numbers.
If (! Eregi ('^ [0-9a-zA-Z] + $', $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n must be letters and numbers! '); </Script> ");
}
}
Else if ($ type = 4) {// email check if the type is 4
If (! Eregi ("^ [_. 0-9a-zA-Z-] + @ ([0-9a-zA-Z _-] +.) + [a-zA-Z] $", $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n format error! '); </Script> ");
}
}
Else if ($ type = 5) {// Date Format check if the type is 5
If (! Eregi ('^ [1-2] {1} [0-9] {3}-[0-9] {2}-[0-9] {2 }', $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n format error! '); </Script> ");
}
}
Else if ($ type = 6) {// if the type is 6, check the ID card number format
If (! Preg_match ('/(^ ([d] {15} | [d] {18} | [d] {17} x) $)/', $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n format error! '); </Script> ");
}
}
Else if ($ type = 7) {// if the type is 7, check the phone number format
If (! Preg_match ("/^ (d {3}) | (d {3 }-))? (0d {2, 3}) | 0d {2, 3 }-)? [1-9] d {6, 7} $/", $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n format error! '); </Script> ");
}
}
Else if ($ type = 8) {// if the type is 8, check the zip code format
If (! Preg_match ("/^ [1-9] d {5} $/", $ value )){
Exit ("<script language = javascript> alert ('". $ msg. "n format error! '); </Script> ");
}
}
Else if ($ type = 9) {// check the url address format if the type is 9
If (! Preg_match ("/^ http: // [A-Za-z0-9] +. [A-Za-z0-9] + [/=? % -&_~ '@ []': +!] * ([^ <> ""]) * $/", $ Value )){
Exit ("<script language = javascript> alert ('". $ msg. "n format error! '); </Script> ");
}
}
Else if ($ type = 10) {// if the type is 10, there is no limit.

} Else {
Echo "<script language = javascript> alert ('category error'); </script> ";
Exit;
}

} Else {
If ($ onoff! = 0 ){
Echo "<script language = javascript> alert ('". $ msg. "n Add". $ msg. "'); </script> ";
Exit;
}
}

}