Php > Php Classes

Form is a utility class for generating html forms. It provides form initialization

Form is a utility class for generating html forms. It provides form initialization
and regex based data validation (both server and client side) with a convenient interface

<?php 

//  This  function  is  needed  because  unset  is  current  (3.0b6)  buggy 
//  when  used  for  associative  arrays. 
function  myunset($a,$key)  { 

    reset($a); 
    while  ($i  =  current($a))  { 
      if  ($key  !=  ($k  =  key($a))) 
          $t[$k]  =  $i; 
      next($a); 
    } 

    $a=$t; 
} 

class  form  { 

    var  $elements; 
    var  $hidden; 

    function  load_defaults($deflist= "")  { 
        if  ($deflist)  { 
            reset($deflist); 
            $el  =  $this->elements[current($deflist)]; 
        }  else  { 
            reset($this->elements); 
            $el  =  current($this->elements); 
        } 
        while  ($el)  { 
            if  (!($eltype  =  $el[ "type"]))  { 
        $el  =  current($el); 
        $eltype  =  $el[ "type"]; 
            } 
            $elname  =  $el[ "name"]; 
            global  $$elname; 
            $elval  =  $$elname; 
            switch  ($eltype)  { 
            case  "text": 
            case  "pass": 
            case  "textarea": 
        $this->elements[$elname][ "value"]  =  $elval; 
        break; 
            case  "checkbox": 
        if  (isset($elval)) 
            $this->elements[$elname][ "checked"]  =  "yes"; 
        else 
            $this->elements[$elname][ "checked"]  =  "no"; 
        break; 
            case  "radio": 
        reset  ($this->elements[$elname]); 
        while  ($temp  =  current($this->elements[$elname]))  { 
            $temp[ "checked"]  =  "no"; 
            next($this->elements[$elname]); 
        } 
        $this->elements[$elname][$elval][ "checked"]  =  "yes"; 
        break; 
            case  "select": 
            case  "select  multiple": 
        $this->elements[$elname][ "value"]  =  $elval; 
        $elops  =  $this->elements[$elname][ "options"]; 
        if  (is_array($elops))  { 
            reset($elops); 
            $elops  =  current($elops); 
            if  (isset($this->elements[$elname][ "valid_e"])  &&     
                    !((is_array($elops)  &&  (($elops[ "label"]  ==  $elval)  || 
                                            ($elops[ "value"]  ==  $elval)))  || 
                ($elops  ==  $elval)))  { 
                myunset(&$this->elements[$elname][ "options"],0); 
                unset($this->elements[$elname][ "valid_e"]); 
            } 
        } 
        break; 
            } 
            if  ($deflist)  { 
        next($deflist); 
        $el  =  $this->elements[current($deflist)]; 
            }  else  { 
        next($this->elements); 
        $el  =  current($this->elements); 
            } 
        } 
    } 

    function  start($jsv_name= "",$method= "",$action= "",$target= "")  { 
        global  $PHP_SELF; 
        if  (!$method)  $method  =  "POST"; 
        if  (!$action)  $action  =  $PHP_SELF; 
        if  (!$target)  $target  =  "_self"; 
        if  ($jsv_name)  { 
            echo  "<script  language=\"javascript\">\n<!--\n"; 
            echo  "function  ${jsv_name}_Validator(f)  {\n"; 
            reset($this->elements); 
            while  ($el  =  current($this->elements))  { 
        if  (!$el[ "type"]) 
            $el  =  current($el); 
        $elname  =  $el[ "name"]; 
        $eltype  =  $el[ "type"]; 
        switch  ($eltype)  { 
        case  "text": 
        case  "password": 
            $el_e  =  $el[ "length_e"]; 
            if  ($elmin  =  $el[ "min_l"])  { 
                echo  "if  (f.${elname}.value.length  <  $elmin)  {\n"; 
                echo  "alert(\"$el_e\");\n"; 
                echo  "f.${elname}.focus();\n"; 
                echo  "return(false);\n}\n"; 
            } 
            if  ($el_e  =  $el[ "valid_e"])  { 
                $el_re  =  $el[ "valid_regex"]; 
                echo  ( "if  (window.RegExp)  {\n"); 
                echo  "var  reg  =  new  RegExp(\"$el_re\");\n"; 
                echo  "if  (!reg.test(f.${elname}.value))  {\n"; 
                echo  "alert(\"$el_e\");\n"; 
                echo  "f.${elname}.focus();\n"; 
                echo  "return(false);\n"; 
                echo  "}\n}\n"; 
            } 
            break; 
        case  "radio": 
            if  ($el_e  =  $el[ "valid_e"])  { 
                echo  "var  l  =  f.${elname}.length;\n"; 
                echo  "var  radioOK  =  false;\n"; 
                echo  "for  (i=0;  i<l;  i++)\n"; 
                echo  "if  (f.${elname}[i].checked)  {\n"; 
                echo  "radioOK  =  true;\n"; 
                echo  "break;\n"; 
                echo  "}\n"; 
                echo  "if  (!radioOK)  {\n"; 
                echo  "alert(\"$el_e\");\n"; 
                echo  "return(false);\n"; 
                echo  "}\n"; 
            } 
            break; 
        case  "select": 
            if  ($el_e  =  $el[ "valid_e"])  { 
                echo  "if  (f.${elname}.selectedIndex  ==  0)  {\n"; 
                echo  "alert(\"$el_e\");\n"; 
                echo  "f.${elname}.focus();\n"; 
                echo  "return(false);\n"; 
                echo  "}\n"; 
            } 
            break; 
        } 
        next($this->elements); 
            } 
            echo  "}\n//-->\n</script>\n"; 
            echo  "<form  method=\"$method\"  "; 
            echo  "action=\"$action\"  "; 
            echo  "target=\"$target\"  "; 
            echo  "onsubmit=\"return  ${jsv_name}_Validator(this)\">\n"; 
        } 
        else 
            echo  "<form  method=\"$method\"  action=\"$action\"  target=\"$target\">"; 
    } 

    function  finish()  { 
        if  ($this->hidden)  { 
            reset($this->hidden); 
            while  ($elname  =  current($this->hidden))  { 
        $elval  =  $this->elements[$elname][ "value"]; 
        echo  "<input  type=\"hidden\"  name=\"$elname\"  value=\"$elval\">\n"; 
        next($this->hidden); 
            } 
        } 
        echo  "</form>\n"; 
    } 

    function  validate($default,$vallist= "")  { 
        if  ($vallist)  { 
            reset($vallist); 
            $el  =  $this->elements[current($vallist)]; 
        }  else  { 
            reset($this->elements); 
            $el  =  current($this->elements); 
        } 
        while  ($el)  { 
            if  (!$el[ "type"]) 
        $el  =  current($el); 
            $elname  =  $el[ "name"]; 
            $eltype  =  $el[ "type"]; 
            global  $$elname; 
            $elval  =  $$elname; 
            switch  ($eltype)  { 
            case  "text": 
            case  "password": 
        $el_e  =  $el[ "length_e"]; 
        if  (($elmin  =  $el[ "min_l"])  &&  strlen($elval)  <  $elmin) 
            return  $el_e; 
        $elreg  =  $el[ "valid_regex"]; 
        if  (($el_e  =  $el[ "valid_e"])  &&  !ereg($elreg,$elval)) 
            return  $el_e; 
        break; 
            case  "radio": 
        if  (($el_e  =  $el[ "valid_e"])  &&  !$elval) 
            return  $el_e; 
        break; 
            case  "select": 
        if  ($el_e  =  $el[ "valid_e"])  { 
            $elops  =  $el[ "options"]; 
            reset($elops); 
            $elops  =  current($elops); 
            if  (is_array($elops)) 
                $elops  =  $elops[ "value"]; 
            if  ($elval  ==  $elops) 
                return  $el_e; 
        } 
        break; 
            } 
            if  ($vallist)  { 
        next($vallist); 
        $el  =  $this->elements[current($vallist)]; 
            }  else  { 
        next($this->elements); 
        $el  =  current($this->elements); 
            } 
        } 
        return($default); 
    } 

    function  add_element($el)  { 
        if  (($el[ "type"]  !=  "radio")  &&  ($el[ "type"]  !=  "submit")) 
            $this->elements[$el[ "name"]]  =  $el; 
        else 
            $this->elements[$el[ "name"]][$el[ "value"]]  =  $el; 
        if  ($el[ "type"]  ==  "hidden") 
            $this->hidden[]  =  $el[ "name"]; 
    } 

    function  show_element($name,$value= "")  { 
        if  ($value) 
            $el  =  $this->elements[$name][$value]; 
        else 
            $el  =  $this->elements[$name]; 
        $eltype  =  $el[ "type"]; 
        $elname  =  $el[ "name"]; 
        $elvalue  =  $el[ "value"]; 
        $elextrahtml  =  $el[ "extra_html"]; 
        switch  ($eltype)  { 
        case  "text": 
        case  "password": 
            echo  "<input  type=\"$eltype\"  name=\"$elname\"  value=\"$elvalue\""; 
            if  ($el[ "max_l"])  { 
        $elmaxl  =  $el[ "max_l"]; 
        echo  "  maxlength=\"$elmaxl\""; 
            } 
            if  ($elsize  =  $el[ "size"]) 
        echo  "  size=\"$elsize\""; 
            echo  "  $elextrahtml>\n"; 
            break; 
        case  "image": 
            echo  "<input  type=\"$eltype\"  name=\"$elname\"  value=\"$elvalue\""; 
            $elsrc  =  $el[ "src"]; 
            echo  "src=\"$elsrc\"  $elextrahtml>\n"; 
            break; 
        case  "checkbox": 
        case  "radio": 
            if  (($elchk  =  $el[ "checked"])  &&  $elchk  !=  "no") 
        $elextrahtml  .=  "  checked"; 
        case  "hidden": 
        case  "submit": 
        case  "reset": 
            echo  "<input  type=\"$eltype\"  name=\"$elname\"  value=\"$elvalue\""; 
            echo  "  $elextrahtml>\n"; 
            break; 
        case  "textarea": 
            $elrows  =  $el[ "rows"]; 
            $elcols  =  $el[ "cols"]; 
            $elwrap  =  $el[ "wrap"]; 
            echo  "<textarea  name=\"$elname\"  "; 
            echo  "rows=\"$elrows\"  cols=\"$elcols\"  wrap=\"$elwrap\""; 
            echo  "  $elextrahtml>\n"; 
            echo  "$elvalue"; 
            echo  "</txtarea>"; 
            break; 
        case  "select": 
        case  "select  multiple": 
            $elsize  =  $el[ "size"]; 
            $elops  =  $el[ "options"]; 
            echo  "<$eltype  name=\"$elname"; 
            if  ($eltype  ==  "select  multiple") 
        echo  "[]\""; 
            else 
        echo  "\""; 
            if  ($elsize) 
        echo  "  size=\"$elsize\""; 
            echo  "  $elextrahtml>\n"; 
            if  (is_array($elops)) 
        while  ($curop  =  current($elops))  { 
            echo  "<option"; 
            if  (is_array($curop))  { 
                $curval  =  $curop[ "value"]; 
                $curop  =  $curop[ "label"]; 
                echo  "  value=\"$curval\""; 
            } 
            if  (is_array($elvalue))  { 
                reset($elvalue); 
                while  ($temp  =  current($elvalue))  { 
                    if  ($temp  ==  $curval  ||  $temp  ==  $curop) 
                echo  "  selected"; 
                    next($elvalue); 
                } 
            }  elseif  ((isset($curval)  &&  ($elvalue  ==  $curval))   
                        ||  strval($elvalue)  ==  strval($curop)) 
                    echo  "  selected"; 
            echo  ">$curop</option>\n"; 
            next($elops); 
        } 
            echo  "</select>\n"; 
            break; 
  
        } 
    } 

} 

?>