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PHP - Sub/child Class Override
I need to add more code to an existing function located inside the parent class. I'm using code like this but can't get it working :
// Parent
class Default_Fields {
public function fields() {
$this->_fields = array()
// Default Code
}
}
// Child
class More_Fields extends Default_Fields {
public function fields() {
$this->_fields = array()
// Modified Code
}
}
$new = new More_Fields;
$new->fields();
Similar TutorialsI have these two classes: Code: [Select] <?php class A { private $id; public function __construct() { $this->id = '11111'; } public function getProperty($prop) { return $this->$prop; } }?> Code: [Select] <?php class B extends A { private $message = "Nope, can't see it"; public function __construct() { parent::__construct(); $this->message = "Yep, I can see it"; } }?> I tried this, but it just outputs the id (the first call) Code: [Select] $class = new B; echo $class->getProperty('id'); echo $class->getProperty('message'); Why is that? I thought I could use a parent method on a child property.. *EDIT* Using a public or protected visibility on the message property gets me the output I expect...how come? Hi I am trying to create a hierarchy array from our mysql database. What i have so far is:
//instantiate DB & connect
$database = new Database();
$db = $database->connect();
//instantiate question object
$question = new Question($db);
//query
$results = $question->read();
//check for data
if ($results) {
$question_arr['questions'] = array();
$child_arr = array();
while ($row = $results->fetch(PDO::FETCH_ASSOC)) {
array_push($question_arr['questions'], $row);
$question_arr['questions'][] = buildTree($row);
}
print_r($question_arr['questions']);
} else {
echo json_encode(array('message'=>'nothing here!.'));
}
function buildTree($child) {
$branch = array();
foreach ($child as $row) {
$childresults = $question->read_children($row['parentid']);
while ($childrow =$childresults->fetch(PDO::FETCH_ASSOC)) {
$children = buildTree($childrow);
if ($children) {
$row['children'] = $children;
}
$branch[] = $childrow;
}
}
//}
return $branch;
}
in my Questions.php file:
<?php
class Question{
private $conn;
public $id;
public $childid;
public $parentid;
public $question;
public $pageid;
public $numclicks;
public $typeid;
public $date_created;
// Constructor with DB
public function __construct($db) {
$this->conn = $db;
}
public function read() {
//create query(sql statement)
$query = 'SELECT id as parentid, question, pageid, typeid,numclicks,date_created from ct_questions';
// Prepare statement
$stmt =$this->conn->prepare($query);
// Execute query
$stmt->execute();
return $stmt;
}
public function read_children($parentid)
{
//This is from a View I created in Mysql
$query = 'SELECT parent_question, parentid, parent_pageid, child_question, childid, child_pageid from ct_vquestion_parent_child_lookup where parentid='.$parentid.'';
// Prepare statement
$stmt = $this->conn->prepare($query);
// Execute query
$stmt->execute();
return $stmt;
}
}
the current errors i am getting a <br /> <b>Notice</b>: Undefined variable: question in <b>C:\htdocs\api\questions\read.php</b> on line <b>41</b><br /> <br /> <b>Fatal error</b>: Uncaught Error: Call to a member function read_children() on null in C:\htdocs\api\questions\read.php:41 Stack trace: #0 C:\htdocs\api\questions\read.php(28): buildTree(Array) #1 {main} thrown in <b>C:\htdocs\api\questions\read.php</b> on line <b>41</b><br /> I have a function which echos an array output, which creates links on a page related to that page. It all works well, but the CSS is making the links blue and purple as standard, and I want to overwrite this to make the links white. What can I add to the code to overwrite the style of the echo? The font size is working, but the colour is being overridden. The code I currently have is: echo "<p> <font color='ffffff' size='4pt'>$echo</font></p>";
What am I doing wrong? Hi guys, I'm sending mail from php running on a cheap webhost with the following: Code: [Select] $to = 'name@domain.com.au'; $header = 'MIME-Version: 1.0' . "\r\n"; $header .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n"; $header .= "From: Name <noreply@domain.info>" . "\r\n"; $subject = "Interest registered"; $message = "<!DOCTYPE HTML.. a bunch of html"; mail($to, $subject, $message, $header); As you can see I've set "from" in the headers. When I receive the email however, it says from: myusername@my.cheaphost.com on behalf of Name [noreply@domain.info] I need to get rid of the on behalf bit as it looks completely unprofessional. I just want it to say from: Name [noreply@domain.info] Obviously this is probably something to do with the setup of the server, some of which I have no control over. I have access to another mail server which I can use to send email, so I put this at the start of my code: Code: [Select] ini_set('SMTP', 'mail.myotherserver.com.au'); echo ini_get('SMTP'); Which returns mail.myotherserver.com.au however, when I use the mail function, it still comes from myusername@my.cheaphost.com on behalf of Name [noreply@domain.info] Is there something I'm missing, is the mail function not tied to the SMTP value? Thanks What other ways are there of redirecting to a different page, other than the standard Code: [Select] <meta HTTP-EQUIV="REFRESH" content="3; ... Ways that cannot be prevented by browsers? Do any of you know how to override the php.ini file on a webhost to allow uploads using php to be set for 2gig mx file size? .htaccess is not working and my host says it supports changing the php.ini but nothing seems to be working. This topic has been moved to PHP Installation & Configuration. http://www.phpfreaks.com/forums/index.php?topic=343981.0 Hi there,
I have a timetable plugin that shows booking entries.
The times are generated dynamically by the plugin.
Now I have the situation where I need to override the automatically created time that shows in a table row.
Here's the HTML code generated by the plugin:
<tr class="row_12">
<td class="tt_hours_column">00:00</td>
Ist it possible to have a simple PHP script that does the following (please forgive my noobiness) ?
if table row is "row_12" then insert "my own pre-defined time"
Please don't hate on me, I know I have not the slightest idea about php. I'm just wondering how to solve my plugin problem and if PHP is the right way to do it.
I highly appreciate any feedback from you guys
Hey guys! I have the following strange problem: Listing 1: echo $n; // Result is 20167 ! if($child->id == $n){ $image = array(); $image[] = '"' . $child->id . '"'; $image[] = '"' . $child->name . '"'; $image[] = '"' . $misc->clean_path($child->file) . '"'; $image[] = '"' . $child->file_name . '"'; $image[] = '"' . $child->file_type . '"'; $image[] = '"' . $path . '"'; $images[] = implode("\t", $image); } The if-statement is not true... so probably there's no $child->id with value 20167.... but watch this: Listing 2: if($child->id == 20167){ $image = array(); $image[] = '"' . $child->id . '"'; $image[] = '"' . $child->name . '"'; $image[] = '"' . $misc->clean_path($child->file) . '"'; $image[] = '"' . $child->file_name . '"'; $image[] = '"' . $child->file_type . '"'; $image[] = '"' . $path . '"'; $images[] = implode("\t", $image); } Now with the hard coded value 20167 the statement is true and gives one result.... Strange, isn't it? I placed the following three functions/test direct before the if-statement: var_dump($n); Result: NULL echo $n Result: 20167 echo "{$n}"; Result: I tested one function at a time. How can this happen? Thanks to all! :-) I have mysqli object in Database class base: [color=]database class:[/color] class Database { private $dbLink = null; public function __construct() { if (is_null($this->dbLink)) { // load db information to connect $init_array = parse_ini_file("../init.ini.inc", true); $this->dbLink = new mysqli($init_array['database']['host'], $init_array['database']['usr'], $init_array['database']['pwd'], $init_array['database']['db']); if (mysqli_connect_errno()) { $this->dbLink = null; } } } public function __destruct() { $this->dbLink->close(); } } Class derived is Articles where I use object dBLink in base (or parent) class and I can't access to mysqli methods (dbLink member of base class): Articles class: require_once ('./includes/db.inc'); class Articles extends Database{ private $id, .... .... $visible = null; public function __construct() { // Set date as 2009-07-08 07:35:00 $this->lastUpdDate = date('Y-m-d H:i:s'); $this->creationDate = date('Y-m-d H:i:s'); } // Setter .... .... // Getter .... .... public function getArticlesByPosition($numArticles) { if ($result = $this->dbLink->query('SELECT * FROM articles ORDER BY position LIMIT '.$numArticles)) { $i = 0; while ($ret = $result->fetch_array(MYSQLI_ASSOC)) { $arts[$i] = $ret; } $result->close(); return $arts; } } } In my front page php I use article class: include_once('./includes/articles.inc'); $articlesObj = new articles(); $articles = $articlesObj->getArticlesByPosition(1); var_dump($articles); [color=]Error that go out is follow[/color] Notice: Undefined property: Articles::$dbLink in articles.inc on line 89 Fatal error: Call to a member function query() on a non-object in articles.inc on line 89 If I remove constructor on derived class Articles result don't change Please help me Hi Can you call Class A's methods or properties from Class B's methods? Thanks. Ok. I know you can pass the object of a class as an argument. Example: class A { function test() { echo "This is TEST from class A"; } } class B { function __construct( $obj ) { $this->a = $obj; } function test() { $this->a->test(); } } Then you could do: $a = new A(); $b = new B($a); Ok so that's one way i know of. I also thought that you could make a method static, and do this: (assuming class A's test is 'static') class B { function test() { A::test(); } } But that is not working. I'd like to know all possible ways of accomplishing this. Any hints are appreciated. thanks 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? 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 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? Hi to all,
As per my client suggested, i need to change the info box background color for every info box (circular way). So i used the CSS3 pseudo nth-child algoritham to assign each info box background color with different background colors.
Here is my html code
<div class="row flexslider carousel" id="appList">
<ul class="slides">
<li>
<div class="col-lg-3 col-md-6 col-sm-6">
<div class="info-box">
<img src="img/shortcuts/money.png" alt="">
<div class="count">1</div>
<div class="title">New users</div>
<div class="desc">Purchase</div>
<div class="desc f-bold">Test</div>
</div>
</div>
</li>
<li>
<div class="col-lg-3 col-md-6 col-sm-6">
<div class="info-box">
<img src="img/shortcuts/money.png" alt="">
<div class="count">2</div>
<div class="title">New users</div>
<div class="desc">Purchase</div>
<div class="desc f-bold">Test</div>
</div>
</div>
</li>
<li>
<div class="col-lg-3 col-md-6 col-sm-6">
<div class="info-box">
<img src="img/shortcuts/money.png" alt="">
<div class="count">3</div>
<div class="title">New users</div>
<div class="desc">Purchase</div>
<div class="desc f-bold">Test</div>
</div>
</div>
</li>
<li>
<div class="col-lg-3 col-md-6 col-sm-6">
<div class="info-box">
<img src="img/shortcuts/money.png" alt="">
<div class="count">4</div>
<div class="title">New users</div>
<div class="desc">Purchase</div>
<div class="desc f-bold">Test</div>
</div>
</div>
</li>
<li>
<div class="col-lg-3 col-md-6 col-sm-6">
<div class="info-box">
<img src="img/shortcuts/money.png" alt="">
<div class="count">5</div>
<div class="title">New users</div>
<div class="desc">Purchase</div>
<div class="desc f-bold">Test</div>
</div>
</div>
</li>
</ul>
</div>
Here is CSS code
.info-box {
min-height: 140px;
border: 1px solid black;
margin-bottom: 30px;
padding: 20px;
color: white;
-webkit-box-shadow: inset 0 0 1px 1px rgba(255, 255, 255, 0.35), 0 3px 1px -1px rgba(0, 0, 0, 0.1);
-moz-box-shadow: inset 0 0 1px 1px rgba(255, 255, 255, 0.35), 0 3px 1px -1px rgba(0, 0, 0, 0.1);
box-shadow: inset 0 0 1px 1px rgba(255, 255, 255, 0.35), 0 3px 1px -1px rgba(0, 0, 0, 0.1);
}
.info-box i {
display: block;
height: 100px;
font-size: 60px;
line-height: 100px;
width: 100px;
float: left;
text-align: center;
border-right: 2px solid rgba(255, 255, 255, 0.5);
margin-right: 20px;
padding-right: 20px;
color: rgba(255, 255, 255, 0.75);
}
.info-box img {
display: block;
height: auto;
font-size: 46px;
line-height: 46px;
width: auto;
float: left;
text-align: center;
border-right: 2px solid rgba(255, 255, 255, 0.5);
margin-right: 20px;
padding-right: 20px;
color: rgba(255, 255, 255, 0.75);
}
.info-box .count {
margin-top: -10px;
font-size: 34px;
font-weight: 700;
}
.info-box .title {
font-size: 12px;
text-transform: uppercase;
font-weight: 600;
}
.info-box .desc {
margin-top: 10px;
font-size: 12px;
}
#appList ul.slides li div div.info-box:nth-child(5n+1) {
background: #fabb3d;
border: 1px solid #f9aa0b;
}
#appList ul.slides li div div.info-box:nth-child(5n+2) {
background: #ff5454;
border: 1px solid #ff2121;
}
#appList ul.slides li div div.info-box:nth-child(5n+3) {
background: #67c2ef;
border: 1px solid #39afea;
}
#appList ul.slides li div div.info-box:nth-child(5n+4) {
background: #79c447;
border: 1px solid #61a434;
}
#appList ul.slides li div div.info-box:nth-child(5n) {
background: #20a8d8;
border: 1px solid #1985ac;
}
But when i tried with the above code, the info box only accepts (5n+1) CSS code.
Can any one please suggest me the way to get the solution.
Hi, I am trying to work with this xml page: http://maps.google.com/maps/api/directions/xml?origin=m20%202nu&destination=m5%205hf&sensor=false public function LoadXml(){ $xml = simplexml_load_file("http://maps.google.com/maps/api/directions/xml?origin=m20%202nu&destination=m5%205hf&sensor=false"); foreach ($xml->xpath('//distance') as $distance): echo $distance->value->getName() . ": " . $distance->value . "<br />"; endforeach; echo "<BR>"; foreach($xml->xpath('//leg') as $address): echo "The start address is: ".$address-> start_address.$address. "<br />"; echo "The end address is: ".$address->end_address.$address; endforeach; } what this code does is echo out the following: Quote value: 102 value: 268 value: 701 value: 103 value: 4512 value: 275 value: 704 value: 1575 value: 64 value: 65 value: 1782 value: 313 value: 10464 The start address is: Manchester, Greater Manchester M20 2NU, UK The end address is: Salford M5 5HF, UK Now i don't need ALL the values, i only need the total value which is 10464. So is there a way to display the last child, or the final value? So all i want to show is value: 10464.. How can i access the final instance of the value? Thanks again I have the following result that I am getting from a source. Code: [Select] SimpleXMLElement Object ( [CategoryID] => 1 [Name] => Other [Order] => 0 [link] => http://www.link.com?sub=1 ) SimpleXMLElement Object ( [CategoryID] => 1233916011 [Name] => ceramic [Order] => 1 [ChildCategory] => SimpleXMLElement Object ( [CategoryID] => 1234016011 [Name] => dish [Order] => 1 ) [link] => http://www.link.com?sub=13476 ) SimpleXMLElement Object ( [CategoryID] => 1233917011 [Name] => laminate [Order] => 2 [link] => http://www.link.com?sub=98247 ) I need to get it into a database with the following structure Code: [Select] id categoryID cName cOrder clink cparent By using Code: [Select] foreach($this->resp->Store->CustomCategories->CustomCategory as $cat) { $sub = $cat->CategoryID; $ord = $cat->Order; $linkto = "$stlink?fsub=$fsub"; $nm = htmlspecialchars($cat->Name); $par=$cat->ChildCategory->Order; $query = "INSERT INTO Cat (categoryID,cName,cOrder,clink,cparent) VALUES ('$sub','$nm','$ord','$linkto','$par')"; $result = @mysql_query ($query); // Run the query. } I can get Code: [Select] id categoryID cName cOrder clink cparent 1 1 Other 0 http://www.link.com?sub=1 0 2 1233916011 ceramic 1 http://www.link.com?sub=13476 0 2 1233917011 laminate 2 http://www.link.com?sub=98247 0 But I need to get the ChildCategory in there w/ cparent like Code: [Select] id categoryID cName cOrder clink cparent 1 1 Other 0 http://www.link.com?sub=1 0 2 1233916011 ceramic 1 http://www.link.com?sub=13476 0 3 1234016011 dish 1 1 <--- like this 4 1233917011 laminate 2 http://www.link.com?sub=98247 0 any help appreciated... |
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