PHP - Class Not Working >.<

If a class has a constructor but also has a static method, if I call the static method does the constructor run so that I can use an output from the constructor in my static method?

--Kenoli

I have an existing instance of my class Database, now I want to call that instance in my Session class, how would I go about doing this?

Hi,

I need to be able to call a class based on variables.  E.G.

I would normally do:
Code: [Select]
$action = new pattern1()
but i would like to be able to do it dynamicaly:
Code: [Select]
$patNum = 1;
$action = new pattern.$patNum.()
Im wondering if that's possible?  If so what would the correct syntax be?

Many Thanks.

Hi people!

class FirstOne{

public function FunctionOne($FirstInput){
//do stuff and output value
return $value1;
}

}


Then:-


class SecondOne{

public function FunctionTwo($AnotherInput){
//do stuff and output value
return $value2;
}

}


What I want to know is this, if I want to use FunctionOne() in Class SecondOne do I do it like this:-

(Assume as I have instantiated the first class using $Test = new FirstOne(); )


class SecondOne{

function SecondedFunction(){
global $Test;
return $Test->FunctionOne();
}

public function FunctionTwo($AnotherInput){
//do stuff and output value
return $value2;
}

public function FunctionThree(){

//some code here
$this->Test->SecondedFunction();<--I think as I can omit the $this-> reference
}
}


My point is: Do I have to do it this way or is there way of having this done through __construct() that would negate the need for a third party function?

I have a version working, I just think that it is a little convoluted in the way as I have done it, so I thought I would ask you guys.

Any help/advice is appreciated.

Cheers
Rw

I have two classes:

## Admin.php

<?php
class Admin
{
public function __construct()
{
include("Config.php");
}

/**
* deletes a client
* @returns true or false
*/
function deleteClient($id)
{
return mysql_query("DELETE FROM usernames WHERE id = '$id'");
}
}
?>


## Projects.php

<?php
class Projects
{
public function __construct()
{
include("Config.php");
$this->admin = $admin;
$this->dataFolder = $dataFolder;
}

/**
* Deletes a project
* @returns true or false
*/
function deleteProject($id)
{
$root  = $_SERVER['DOCUMENT_ROOT'];
$theDir  = $root . $this->dataFolder;
$sql  = mysql_query("SELECT * FROM projectData WHERE proj_id = '$id'");
while ($row = mysql_fetch_array($sql))
{
$mainFile = $row['path'];
$thumb = $row['thumbnail'];
if ($thumb != 'null')
{
unlink($theDir . "/" . substr($thumb,13));
}
unlink($theDir . "/" . substr($mainFile,13));
}
$delete = mysql_query("DELETE FROM projectData WHERE proj_id = '$id'");
$getDir = mysql_query("SELECT proj_path FROM projects WHERE id = '$id'");
$res = mysql_fetch_array($getDir);
rmdir($theDir . "/" . $res['proj_path']);
return mysql_query("DELETE FROM projects WHERE id = '$id'");
}
}
?>


How can I call deleteProject() from within Admin.php?

How does one go about using one class inside another?

For example, building a class that does some series of functions, and uses a db abstraction layer class in the process?

Hi all,

I have two classes. Registration and Connection.

Inside a registration.php I include my header.php, which then includes my connection.php...

So all the classes should be declared when the page is loaded.

This is my code:


registration.php:

<?php include ('assets/header.php'); ?> 
        
    <?php
        class registration{                    
            public $fields = array("username", "email", "password");
            public $data = array();
            public $table = "users";
            public $dateTime = "";
            public $datePos = 0;
            public $dateEntryName = "date";
            
            function timeStamp(){
                return($this->dateTime = date("Y-m-d H:i:s"));
            }
            
            function insertRow($data, $table){      
                    
                    foreach($this->fields as $key => $value){
                        mysql_query("INSERT INTO graphs ($this->fields)
                        VALUES ('$data[$key]')");
                    }
                    
                    mysql_close($connection->connect);
            }
            
            function validateFields(){
            
                $connection = new connection(); 
                $connection->connect();
                        
                foreach($this->fields as $key => $value){
                    array_push($this->data, $_POST[$this->fields[$key]]);
                }
                $this->dateTime = $this->timeStamp();
                array_unshift($this->data, $this->dateTime);                
                array_unshift($this->fields, $this->dateEntryName);   
                
                foreach($this->data as $value){
                    echo "$value";
                }
                
                $this->insertRow($this->data, $this->table);
            }
        }
        
        $registration = new registration();
        $registration->validateFields();
    ?>

<?php include ('assets/footer.php'); ?>



At this point I cannot find my connection class defined on another included/included page.



                $connection = new connection(); 
                $connection->connect;





config.php (included within header.php)

<?
    class connection{ 
        public $dbname = '**';   
        public $dbHost = '**';
        public $dbUser = '**';
        public $dbPass = '**';
        public $connect;
        
        function connect(){
            $this->connect = mysql_connect($this->dbHost, $this->dbUser, $this->dbPass) or die ('Error connecting to mysql');
            mysql_select_db($this->dbname, $this->connect);
        }
    }
?>



Any ideas how to call it properly?

I have a class in which I have a function called connection. I am now trying to call this function from another class, but it will not work. It works if I put the code in from the other function rather than calling it but that defeats the purpous.

class locationbox

{
   function location()
   {
   
   
   $databaseconnect = new databaseconnect();
         $databaseconnect -> connection();{

$result = mysql_query("SELECT * FROM locations");

while($row = mysql_fetch_array($result)) // line that now gets the error, mysql_fetch_array() expects parameter 1 to be resource, boolean given //in
  {
  echo "<option>" . $row['location'] . "</option>";
    }
   
}
}}

I do know how to do this but I am curious about whether or not there is a "preferred" way to do this. I know there are a couple ways to use a class (I'll call Alpha_Class) within another class (I'll class Beta_Class)

Let's say we have this simple class (Beta_Class):

class beta {
    function foo(){
    
    }
}


If I wanted to use the Alpha Class within the Beta Class, I could any number of things. For example:

class beta {
    function foo(){
        $this->alpha = new alpha;
        //$this->alpha->bar();
    }
}


Or you could simply use the $GLOBALS array to store instantiated objects in:

$GLOBALS['alpha'] = new alpha;
class beta {
    function foo(){
        //GLOBALS['alpha']->bar();
    }
}


You could even declare Alpha_Class as a static class and thus would not need to be instantiated:

static class alpha {
    static function bar(){}
}

class beta {
    function foo(){
        //alpha::bar();
    }
}


Those are the only ways I can think of right now. Are there any other ways to accomplish this? I was wondering which way is the best in terms of readability and maintainability.

Well the title may seem a bit confusing, but heres an example:

Code: [Select]
<?php
class User{
   public $uid;
   public $username;
   protected $password;
   protected $email;
   public $usergroup;
   public $profile;
   

  public function __construct($id){
      // constructor code inside
  }

  public function getemail(){
      return $this->email;
  } 
   
  public function getusergroup(){
      return $this->usergroup;
  }

  public function getprofile(){
      $this->profile = new UserProfile($this->uid);
  }
}

class UserProfile(){
   protected $avatar;
   protected $bio;
   protected $gender;
   protected $favcolor;
   

  public function __construct($id){
      // constructor code inside
  }

  public function formatavatar(){
      // avatar formatting code inside
  }

  public function formatusername(){
      // format username?
  } 
}
?>

As you can see, the User class(an outer class) has a property called Profile, which can be instantiated as a UserProfile object(an inner class). The two objects have distinct functionalities, but there are times when the UserProfile object needs to access property and methods from the user object. I know its easy for outer class to access methods from inner class by using the single arrow access operator twice, but how about the other way around?

Lets say from the above example the userprofile can format the username displayed to the screen by adding a sun to the left of the username if the usergroup is admin, a moon if the usergroup is mod, and nothing if its just a member. The usergroup property is stored in the outer class, and can be accessed with this $user->getusergroup() method only. I know I can always do the hard way by passing a user object to the method's argument, but is there an easier way for the inner class UserProfile to access properties/methods for outerclass User? If so, how can I achieve that?

i dont understand what is wrong plz help me. here is code

$name = "img/".rand(1,9999999).".png";
$myFile = $name;
$fh = fopen($myFile, 'w') or die("can't open file");
$stringData = $html;
fwrite($fh, $stringData);
fclose($fh);
$file=$name;
$fst=file_get_contents($file);
$im=imagecreatefromstring($fst);
imagefilter($im, IMG_FILTER_GRAYSCALE);
imagefilter($im, IMG_FILTER_NEGATE);
//Convert to Grey Scale
for($i=0;$i<123;$i++){
for($j=0;$j<50;$j++){
$px=imagecolorat($im,$i,$j);
if($px<0x303030){
imagesetpixel($im,$i,$j,0);
}else{
imagesetpixel($im,$i,$j,0xffffff);
}
}
}
$database = unserialize(@file_get_contents("db.txt"));
if($database === false) $database = array();
// modify the database if needed
if($_SERVER['REQUEST_METHOD'] == 'POST'){
	if($_POST['submit'] == 'Add')
		$database[$_POST['ident']] = substr($_POST['letter'], 0, 1);
	if($_POST['submit'] == 'Del')
		unset($database[$_POST['ident']]);
	if($fh = @fopen('db111.txt', 'w+')){
		fwrite($fh, serialize($database));
		fclose($fh);
}
}else{
$newimage = true;
}
$width   = 130;
$height  = 40;
$captcha_gridstart   =1;
$captcha_gridspace   =2;
$letters = findletters($im, $width, $height, $captcha_gridstart, $captcha_gridspace);
$count   = count($letters);
$cellw   = ($count > 0) ? intval(100 / $count) : 0;
//dispeckle the image and GET co-ordinates of the characters of captcha image and return them. 
function findletters($image, $width, $height, $gridstart, $gridspace){
	$offsets  = array(); $o = 0;
	$atstartx = true;
	for($x = 0; $x < $width; $x++){
		$blankx = true;
		for($y = 0; $y < $height; $y++){
			if(imagecolorat($image, $x, $y) == 0){
				$blankx = false;
				break;
			}
		}
		if(!$blankx && $atstartx){
			$offsets[$o]['startx'] = $x;
			$atstartx = !$atstartx;
		}else if($blankx && !$atstartx){
			$offsets[$o]['endx']   = $x;
			$atstartx = !$atstartx;
			$o++;
		}
	}
	$count = $o;
	for($o = 0; $o < $count; $o++){
		for($y = 0; $y < $height; $y++){
			$blanky = true;
			for($x = $offsets[$o]['startx']; $x < $offsets[$o]['endx']; $x++){
				if(imagecolorat($image, $x, $y) == 0){
					$blanky = false;
					break;
				}
			}
			if(!$blanky){
				$offsets[$o]['starty'] = $y;
				break;
			}
		}
		for($y = $height-1; $y > $offsets[$o]['starty']; $y--){
			$blanky = true;
			for($x = $offsets[$o]['startx']; $x < $offsets[$o]['endx']; $x++){
				if(imagecolorat($image, $x, $y) == 0){
					$blanky = false;
					break;
				}
			}
			if(!$blanky){
				$offsets[$o]['endy'] = $y;
				break;
			}
		}
	}
	for($o = 0; $o < $count; $o++){
		$offsets[$o]['ident'] = "";
		for($x = $offsets[$o]['startx'] + $gridstart; $x < $offsets[$o]['endx']; $x += $gridspace){
			for($y = $offsets[$o]['starty'] + $gridstart; $y < $offsets[$o]['endy']; $y += $gridspace){
				$offsets[$o]['ident'] .= ((imagecolorat($image, $x, $y) == 0) ? "0" : "1");
				#echo $offsets[$o]['ident'].'<br>';
			}
		}
	}
	return $offsets;
}
$a="";
foreach($letters as $letter){
$asciiletter = $database[$letter['ident']];
if(!empty($asciiletter)) {
$a.=$asciiletter;
}
}

http://paste.ee/p/OhiWv   The above is a link to a readable version of my code.  The XMLHTTPREQUEST worked, and the array was pulled down.  Was able to print out the undecoded/unparsed array.  However, immediately afterwards, all code stops working.

		<script>  
			var xhr;
			 if (window.XMLHttpRequest) { // Mozilla, Safari, ...
				xhr = new XMLHttpRequest();
			} else if (window.ActiveXObject) { // IE 8 and older
				xhr = new ActiveXObject("Microsoft.XMLHTTP");
			} 
				xhr.open("POST", "PHPLibrary/selectMemberResults.php", true); 
				xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");                  
				xhr.send();
				xhr.onreadystatechange = display_data;
				var $phparray
				function display_data() {
				 if (xhr.readyState == 4) {
				  if (xhr.status == 200) {
				    //alert(xhr.responseText);	   
					$phparray = xhr.responseText;
					document.getElementById("suggestion").innerHTML = $phparray;
					//
					//
					//......................................................?
					// The above line of code is the last thing to print or 
					// to do anything that returns to the browser....
					//.......................................................?
					// All lines below do nothing............................?

					//
				  } else {
					//alert('There was a problem with the request.');
				  }
				 }
				}   
				document.write("Length of phparray Array :" + $phparray.length + "<");  
				var output = JSON.parse($phparray, function (key,val) {
					if ( typeof val === 'string' ) {
						// regular expression to remove extra white space
						if ( val.indexOf('\n') !== -1 ) {
							var re = /\s\s+/g;
							return val.replace(re, ' ');
						} else {
							return val;
						}
					}
					return val;
				} ); 
				document.write("Length of Array :" + $output.length + "<");
				for (var i=0; i < $output.length; i++)
					{
						document.getElementById("suggestion").innerHTML = $output[i].MEMBER_NAME;
					}  
		</script> 

I need bit of help, so I am looking into a plugin created for newsletter where default is it shows ad but it has option to remove ads by checking the check box. Default is to send ads in newsletter but if you don't want to send ads through newsletter then check the box. The problem is, it seems like checkbox selected is not being picked up. Some help would be appreciated.

The custom field in wp:

 

'label' => 'Hide newsletter ads',
           'name' => 'hide_ads', 
          'type'  => 'checkbox',
                'instructions'      => 'Checking the checkbox will remove ads',
                'required'          => 0,
                'conditional_logic' => 0,
                'wrapper'           => array(
                    'width' => '',
                    'class' => '',
                    'id'    => '',
                ),
                'choices' => array(
                    'Hide newsletter ads' => 'Hide newsletter ads',
                ),
                'allow_custom' => 0,
                'default_value' => array(
                ),
                'layout' => 'block',
                'toggle' => 0,
                'return_format' => 'value',
                'save_custom' => 0,
               ),

 

This is the php code for it:

  <!doctype html>
    <html lang="en-GB">
 <head>
<meta name="viewport" content="width=device-width" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="x-apple-disable-message-reformatting">
<title><?php the_title(); ?></title>
<style>
    <?php require ABSPATH . 'path/newsletter.css'; ?>
</style>
<!--[if mso]>
<style type="text/css">
.outlook-fallback-font {
    font-family: 'Lucida Bright', 'Cambria', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}
</style>
 <![endif]-->
 </head>

 <?php
$hide_newsletter_ads = get_field('hide_ads');
echo $hide_newsletter_ads;
?>

 <body itemscope itemtype="http://schema.org/EmailMessage">

 <div class="wrap">

    <?php
    if (!$hide_newsletter_ads) {
        include ABSPATH . 'path/ad-banner.php';
        }
    ?>
    <div class="header">
        <a href="<?php bloginfo( 'url' ); ?>">
            <img src="<?php echo get_home_url().'logo.png' ?>" alt="News" 
       />
        </a>
    </div>

    <?php
    if ( have_posts() ) :
        while ( have_posts() ) :
            the_post();
            ?>

            <?php if ( get_field( 'newsletter_summary' ) ) { ?>
                <div class="newsletter-summary"><?php the_field( 'newsletter_summary' ); ?></div>
            <?php } ?>

            <?php if ( have_rows( 'newsletter_content' ) ) : ?>

                <?php
                // Loop through the ACF blocks
                $count = 0;
                while ( have_rows( 'newsletter_content' ) ) :
                    the_row();

                    if ( get_row_layout() === 'story' ) :
                        ?>

                        <?php if ( 0 === $count ) { ?>
                            <span class="date outlook-fallback-font"><?php the_time( 'd M Y' ); ?></span>
                        <?php } ?>

                        <?php if ( get_sub_field( 'story_heading' ) ) : ?>
                            <h1><?php the_sub_field( 'story_heading' ); ?></h1>
                        <?php endif; ?>

                        <div class="content">
                            <?php the_sub_field( 'story_content' ); ?>
                        </div>

                        <?php
                    endif;

                    if ( 'post_list' === get_row_layout() ) :
                        ?>

                        <?php
                        $posts = get_sub_field( 'post_list' );
                        if ( $posts ) :
                            ?>

                        </div>
                        <div class="story-list">
                            <h2><span class="wrap"><?php the_sub_field( 'post_list_heading' ); ?></span></h2>
                            <div class="wrap-table">
                                <table width="100%" cellpadding="0" cellspacing="0" border="0">

                                    <?php
                                    // Output story cards
                                    foreach ( $posts as $i => $post ) {
                                        if ( 0 === $i % 2 ) {
                                            echo '<tr>';
                                        }

                                        $class = ( 0 === $i % 2 ) ? 'odd' : 'even';

                                        $image_src    = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), array( 640, 345 ) );
                                        $image_srcset = wp_get_attachment_image_srcset( get_post_thumbnail_id( $post->ID ) );
                                        echo sprintf(
                                            '<td class="story-cell %4$s" valign="top">
                                            <a href="%1$s" class="story-card outlook-fallback-font">
                                            <img src="%3$s" alt="" height="120" style="height: 150px; object-fit: cover;" />
                                            <span>%2$s</span>
                                            </a>
                                            </td>',
                                            esc_url( get_permalink( $post->ID ) . '?utm_source=newsletter&utm_medium=email&utm_campaign=newsletter' ), // permalink
                                            esc_html( get_the_title( $post->ID ) ), // title
                                            // esc_attr( $image_src[0] ), // image  - src
                                            esc_attr( $image_src[0] ), // image  - src
                                            esc_attr( $class ) // class
                                        );

                                        if ( 0 !== $i % 2 || count( $posts ) === ( $i + 1 ) ) {
                                            echo '</tr>';
                                        }
                                    }
                                    ?>

                                </table>
                            </div>
                        </div>
                        <div class="wrap">
                            <?php
                        endif;
                    endif;

                    if (!$hide_newsletter_ads) {

                     (0 === $count) {
                        include ABSPATH . 'path/mpu-1.php';
                    }

                    if (1 === $count) {
                        include ABSPATH . 'path/mpu-2.php';
                    }
                }

                    $count++;

                endwhile;

            endif;
            ?>

            <div class="footer">
                <table width="100%" cellpadding="0" cellspacing="0" border="0">
                    <tr>
                        <td align="left">
                            &copy;  <?php echo esc_html( date( 'Y' ) ); ?>
                        </td>
                        <td class="footer-link">
                            <a href="<?php echo get_permalink( get_page_by_path( 'privacy-policy' ) ); ?>">Privacy Policy</a> &middot;
                            <a href="%unsubscribe_url%">Unsubscribe</a>
                        </td>
                    </tr>
                </table>
            </div>

        </div>

        <?php
    endwhile;
endif;
?>

 

When I echo the POST, it echoes the correct value.
The MySQL portion seems to just ignore it all together.
I've tried changing the dropdown option to just a text field, same thing occurred.
I have text fields right above this particular one that update just fine with the SAME exactly scripting.
if POST, update query, done. Works.

This one for some reason will not.

MySQL portion:
if ($_POST['bUpdate']){
mysql_query("UPDATE `Patients` SET `b` = '$_POST[bUpdate]' WHERE `id` = '".$_GET['id']."'");
}
echo $_POST['bUpdate'];

Form Portion:
Code: [Select]
    <tr onmouseover="color(this, '#baecff');" onmouseout="uncolor(this);">
    <td width="310" colspan="2" align="center"><span class="fontoptions">Postcard Status </span><br />
<?
if ($data['b'] == 1){
echo '<select name="bUpdate"><option value="1" selected>Yes</option><option value="0">No</option></select>';
} else {
echo '<select name="bUpdate"><option value="1">Yes</option><option value="0" selected>No</option></select>';
}

?>
</td>
    </tr>

I'm trying to turn this while loop into a for loop and am unable to get my result set to display properly in the for loop.  The while works fine I just want to be able to have more control over which information is shown in my table as I loop and was wanting to use a for loop that way I can take advantage of the counter variable while i"m displaying my information.  Any help would be appreciated. 

while ($row = mysql_fetch_assoc($data_result_set)) {
            echo "<td>".$row["product_id"]."</td>";
            echo "<td>".$row["city"]."</td>";
            echo "<td>".$row["quantity"]."</td>";
            }


*** I'm wanting it to look like something like this but can't figure out how to properly work in which row to display with the $i variable.

$count=mysql_num_rows($data_result_set);

for($i = 0; $i <= $count; $i++){
echo "<td>".mysql_fetch_assoc[$i]["product_id"]."</td>";
            echo "<td>".mysql_fetch_assoc[$i]["city"]."</td>";
            echo "<td>".mysql_fetch_assoc[$i]["quantity"]."</td>";

}

I know the syntax for the for loop is totally off with the method mysql_fetch_assoc just dropped in there like a jerk but I'm just kinda pseudoing it out.

Any help would be appreciated.
Thanks in advance.