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good day dear community,

i am workin on a Curl loop to fetch multiple pages:

i have some examples - and a question:

Example: If we want to get information from 3 sites with CURL we can do it like so:


$list[1] = "http://www.example1.com";
$list[2] = "ftp://example.com";
$list[3] = "http://www.example2.com";


After creating the list of links we should initialize the cURL multi handle and adding the cURL handles.


$curlHandle = curl_multi_init();
for ($i = 1;$i <= 3; $i++)
 $curl[$i] = addHandle($curlHandle,$list[$i]);


Now we should execute the cURL multi handle retrive the
content from the sub handles that we added to the cURL multi handle.

ExecHandle($curlHandle);
for ($i = 1;$i <= 3; $i++)
{
 $text[$i] =  curl_multi_getcontent ($curl[$i]);
 echo $text[$i];
}

In the end we should release the handles from the cURL multi handle by calling curl_multi_remove_handle and close the cURL multi handle!

If we want to another Fetch of sites with cURL-Multi - since this is the most pretty way to do it!
Well I am not sure bout the string concatenation. How to do it - Note I want to fetch several hundred pages:
see the some details for this target-server sites - /(I have to create a loop over several hundred sites).

    * siteone.example/?show_subsite=9009
    * siteone.example/?show_subsite=9742
    * siteone.example/?show_subsite=9871

.... and so on and so forth Question: How to appy this loop into the array of the curl-multi?



<?php
/************************************\
* Multi interface in PHP with curl  *
* Requires PHP 5.0, Apache 2.0 and  *
* Curl         *
*************************************
* Writen By Cyborg 19671897         *
* Bugfixed by Jeremy Ellman         *
\***********************************/

$urls = array(
   "siteone",
   "sitetwo",
   "sitethree"
   );

$mh = curl_multi_init();

foreach ($urls as $i => $url) {
       $conn[$i]=curl_init($url);
       curl_setopt($conn[$i],CURLOPT_RETURNTRANSFER,1);//return data as string 
       curl_setopt($conn[$i],CURLOPT_FOLLOWLOCATION,1);//follow redirects
       curl_setopt($conn[$i],CURLOPT_MAXREDIRS,2);//maximum redirects
       curl_setopt($conn[$i],CURLOPT_CONNECTTIMEOUT,10);//timeout
       curl_multi_add_handle ($mh,$conn[$i]);
}

do { $n=curl_multi_exec($mh,$active); } while ($active);

foreach ($urls as $i => $url) {
       $res[$i]=curl_multi_getcontent($conn[$i]);
       curl_multi_remove_handle($mh,$conn[$i]);
       curl_close($conn[$i]);
}
curl_multi_close($mh);


print_r($res);

?>





I look forward to your ideas.

I have a need to create a form that will get info from a mysql table, show that info, two fields one of which I want to be a checkbox that will need to update the table with either a 0 or a 1.  I will later use that info.  I have searched all over and haven't found what I am looking for.  I can find tutorials for creating checkboxes but nothing what I need / want

 

Hello Php Freaks

I am following this tutorial how to make a login for my website, the only trouble is that... It dosen't seem to work, so i wanna know if its only me who cant make it work... and if it is why XD...

Tutorial can be found he
http://www.knowledgesutra.com/forums/topic/7887-php-simple-login-tutorial/


Now when i get started it starts saying error at line 6:
        if ($_GET["op"] == "login")

It says that when im about to login right above the login.

Now when i put in data i get error on line 19:

  $r = mysql_query($q);

That one, and i have no idea how to fix it.

Anyone please ?

I followed the tutorial at http://www.devshed.com/c/a/PHP/Building-An-Extensible-Form-Validator-Class/ because I wanted to have an easier way to build and maintain form validation.
I completed the tutorial, but the form does not register the form as being filled out.
Here is the class code (FormValidator.class.inc)
<?php
//FormValidator.class.inc
//class to perform form validation
class FormValidator {

   //---------------private variables------------------

   var $_errorList;
   //the _ prefix is used to distinguish private variables from public variables

   //---------------methods (private)------------------
   
   //functio to get the value of a variable (field)
   function _getValue($field) {
      global ${$field}; //makes the field entry a global variable
      return ${$field};
   }

   //---------------methods (public)-------------------
   
   //it is a good idea to run resetErrorList() whenever the class is first initialized
   //PHP makes it possible to automatically execute a specific function when a new instance of a class is spawned. This function is referred to as a "constructor" and must have the same name as the class.
   //reset error list
   function FormValidator() {
      $this->resetErrorList();
   }
   
   
      //begin basic validation routines
      
   //check whether input is empty
      //the isEmpty public method is called with 2 arguments, one for the form variable and one for the error message
      //the method internally calls the _getValue method and then trim()s the result to check if it is empty
      // if the variable is empty, a new element is added class variable $_errorList (an array) to represent the error. This new element is itself a three-element associative array, with the keys "field", "value" and "msg", representing the form variable name, the current value of that variable, and the corresponding error message
      // if the variable is not empty, it will pass the test and return true
      // this function, along with _getValue, allows the user to get both the field name and the field value
      //the $this prefix provides a convenient way to access variables and functions which are "local" to the class.
   function isEmpty($field, $msg) {
      $value = $this->_getValue($field);
      if (trim($value) == "") {
         $this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
         return false;
      }
      else {
         return true;
      }
   }
   
   //check whether input is a string
   function isString($field, $msg) {
      $value = $this->_getValue($field);
      if(!is_string($value)) {
         $this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
         return false;
      }
      else {
         return true;
      }
   }
   
   //check whether input is a number
   function isNumber($field, $msg) {
      $value = $this->_getValue($field);
      if(!is_numeric($value)) {
         $this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
         return false;
      }
      else {
         return true;
      }
   }
   
   //check whether input is an integer
   function isInteger($field, $msg) {
      $value = $this->_getValue($field);
      if(!is_integer($value)) {
         $this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
         return false;
      }
      else {
         return true;
      }
   }
   
   //check whether input is a float
   function isFloat($field, $msg) {
      $value = $this->_getValue($field);
      if(!is_float($value)) {
         $this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
         return false;
      }
      else {
         return true;
      }
   }
   
   //check whether input is within a valid numeric range
   function isWithinRange($field, $msg, $min, $max) {
      $value = $this->_getValue($field);
      if(!is_numeric($value) || $value < $min || $value > $max) {
         $this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
         return false;
      }
      else {
         return true;
      }
   }
   
   //check whether the input is alphanumeric
   function isAlpha($field, $msg) {
      $value = $this->_getValue($field);
      $pattern = "/^[a-zA-Z]+$/";
      if (preg_match($pattern, $value)) {
         return true;
      }
      else {
         $this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
         return false;
      }
   }
   
   //check whether input is a valid email address
   function isEmailAddress($field, $msg) {
      $value = $this->_getValue($field);
      $pattern =
      "/^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-]+)+/
      ";
      if (preg_match($pattern, $value)) {
         return true;
      }
      else {
         $this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
         return false;
      }
   }
   
      //end basic validation routines-----
   
   //return the list of current errors
   function getErrorList() {
      return $this->_errorList;
   }
   
   //check whether any errors have occured in validation
      //this method checks the size of the $_errorList array; if the size is greater than one, it implies that one or more errors have occured during validation
      //it returns a Boolean value
   function isError() {
      if(sizeof($this->_errorList) > 0) {
         return true;
      }
      else {
         return false;
      }
   }
   
   
   //reset the error list to a blank array
   function resetErrorList() {
      $this->_errorList = array();
   }

}//end FormValidator class
?>
-------Here is the form (simpleform.html)
<html>
   <head>
      <basefont face="Arial">
   </head>
   <body>
      <form action="processor.php" method="POST">
         <b>Name:</b>
            <br>
            <input type="text" name="name" size="15">
      
         <p>
      
         <b>Age:</b>
            <br>
            <input type="text" name="age" size="2" maxlength="2">
         
         <p>
      
         <b>Sex:</b>
            <br>
            <input type="Radio" name="sex" value="m">Male
            <input type="Radio" name="sex" value="f">Female
         
         <p>
      
         <b>Favourite sandwich type:</b>
            <br>
            <select name="stype">
               <option value="">-select one-</option>
               <option value="1">Thin crust</option>
               <option value="2">Thick crust</option>
               <option value="3">Toasted</option>
            </select>
         
         <p>

         <b>Favourite sandwich filling:</b>
            <br>
            <input type="Checkbox" name="sfill[]" value="BLT">Bacon, lettuce tomato
            <input type="Checkbox" name="sfill[]" value="EC">Egg and cheese
            <input type="Checkbox" name="sfill[]" value="PBJ">Peanut butter and jelly
         
         <p>
      
         <input type="Submit" name="submit" value="Save">
      
      </form>
   </body>
</html>
------and here is processor.php
<?php
//include class
include("FormValidator.class.inc");
// instantiate object
$fv = new FormValidator();
//perform validation
   $fv->isEmpty("name", "Please enter a name");
   $fv->isNumber("age", "Please enter a valid age");
   $fv->isWithinRange("age", "Please enter an age within the numeric range 1-99", 1, 99);
   $fv->isEmpty("sex", "Please enter your sex");
   $fv->isEmpty("stype", "Please select one of the listed sandwich types");
   $fv->isEmpty("sfill", "Please select one or more of the listed sandwich fillings");
   if($fv->isError()) {
      $errors = $fv->getErrorList();
      echo "<b>The operation could not be performed because one or more error(s) occurred.</b> <p> Please resubmit the form after making the following changes:";
      echo "<ul>";
         foreach($errors as $e) {
            echo "<li>" . $e['msg'] . "</li>";
         }
         echo "</ul>";
   }
   else {
      //do something useful with the data
      echo "Data OK";
   }

?>