PHP - Return Variables
I have a form page (referred to as form.php) which is then processed via a submit button, the script then processes the data from the form.php and if it discovers an error it then sets a variable containing the error message
my process page contains Code: [Select] if (empty($b_addr)) { $b_addr_error = "Address is required"; $check_failed = TRUE;} header("Location: form.php"); then my form.php contains Code: [Select] $b_addr_error = safe($_GET['b_addr_error']); if (isset($_POST['$b_addr_error'])) { echo "<div class='errorfont' align='center'>'".$b_addr_error."';</div>"; } but the variables do not get passed back to form.php from the process page, any ideas? Thank you. Similar TutorialsI'm not versed in PHP OOP and I have some code that I need to echo out onto a page. I don't know what the meaning of $ct->something is in this code. Is this an array of some type? How do I echo out the $ct->title onto another page? Use a function call? I just don't know what all of the $ct variables are and how to get to them. Any help is appreciated. Code: [Select] function current_theme_info() { $themes = get_themes(); $current_theme = get_current_theme(); if ( ! isset( $themes[$current_theme] ) ) { delete_option( 'current_theme' ); $current_theme = get_current_theme(); } $ct->name = $current_theme; $ct->title = $themes[$current_theme]['Title']; $ct->version = $themes[$current_theme]['Version']; $ct->parent_theme = $themes[$current_theme]['Parent Theme']; $ct->template_dir = $themes[$current_theme]['Template Dir']; $ct->stylesheet_dir = $themes[$current_theme]['Stylesheet Dir']; $ct->template = $themes[$current_theme]['Template']; $ct->stylesheet = $themes[$current_theme]['Stylesheet']; $ct->screenshot = $themes[$current_theme]['Screenshot']; $ct->description = $themes[$current_theme]['Description']; $ct->author = $themes[$current_theme]['Author']; $ct->tags = $themes[$current_theme]['Tags']; $ct->theme_root = $themes[$current_theme]['Theme Root']; $ct->theme_root_uri = $themes[$current_theme]['Theme Root URI']; return $ct; } All my code is returning is the username... Please help.
index.php
<?php include('user.class'); $user = new user("Jbonnett", "0", "Admin", "Jamie", "Bonnett", "jbonnett@site.co.uk", "01/09/1992"); echo "username: " . $user->getUsername() . "<br/>"; echo "id: " . $user->getId() . "<br/>"; echo "level: " . $user->getLevel() . "<br/>"; echo "Forename: " . $user->getForename() . "<br/>"; echo "Surname: " . $user->getSurname() . "<br/>"; echo "Email: " . $user->getEmail() . "<br/>"; echo "Dob: " . $user->getDob() . "<br/>"; ?>user.class <?php class user { private $username; private $id; private $level; private $forename; private $surname; private $email; private $dob; public function user($username, $id, $level, $forname, $surname, $email, $dob) { $this->setUsername($username); $this->setId($id); $this->setLevel($level); $this->setForename($forename); $this->setSurname($surname); $this->setEmail($email); $this->setDob($dob); } public function destroy() { unset($this->username); unset($this->id); unset($this->level); unset($this->forename); unset($this->surname); unset($this->uemail); unset($this->dob); } public function setUsername($username) { $this->username = $username; } public function getUsername() { return $this->username; } public function setId($id) { $this->id = $id; } public function getId() { return $this->$id; } public function setLevel($level) { $this->level = $level; } public function getLevel() { return $this->level; } public function setForename($forename) { $this->foreName = $forename; } public function getForename() { return $this->forename; } public function setSurname($surname) { $this->surName = $surname; } public function getSurname() { return $this->surname; } public function setEmail($email) { $this->email = $email; } public function getEmail() { return $this->email; } public function setDob($dob) { $this->dob = $dob; } public function getDob() { return $this->dob; } }; ?> does anyone know how to decode this XML variable value into string values? I also need to know the oposite way: creating variable values into xml. I've tried several code examples but they did filter the requested data. Code: [Select] $xml='<?xml version="1.0" encoding="utf-8"?> <elements> <text identifier="ed9cdd4c-ae8b-4ecb-bca7-e12a5153bc02"> <value/> </text> <textarea identifier="a77f06fc-1561-453c-a429-8dd05cdc29f5"> <value><![CDATA[<p style="text-align: justify;">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>]]></value> </textarea> <textarea identifier="1a85a7a6-2aba-4480-925b-6b97d311ee6c"> <value><![CDATA[<p style="text-align: justify;">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p>]]></value> </textarea> <image identifier="ffcc1c50-8dbd-4115-b463-b43bdcd44a57"> <file><![CDATA[images/stories/red/cars/autobedrijf.png]]></file> <title/> <link/> <target/> <rel/> <lightbox_image/> <width><![CDATA[250]]></width> <height><![CDATA[187]]></height> </image> <text identifier="4339a108-f907-4661-9aab-d6f3f00e736e"> <value><![CDATA[Kramer 5]]></value> </text> <text identifier="ea0666d7-51e3-4e52-8617-25e3ad61f8b8"> <value><![CDATA[6000 RS]]></value> </text> <text identifier="90a18889-884b-4d53-a302-4e6e4595efa0"> <value><![CDATA[Eindhoven]]></value> </text> <text identifier="410d72e0-29b3-4a92-b7d7-f01e828b1586"> <value><![CDATA[APK Pick up and return]]></value> </text> <text identifier="45b86f23-e656-4a81-bb8f-84e5ea76f71f"> <value><![CDATA[15% korting op grote beurt]]></value> </text> <text identifier="3dbbe1c6-15d6-4375-9f2f-f0e7287e29f3"> <value><![CDATA[Gratis opslag zomerbanden]]></value> </text> <text identifier="2e878db0-605d-4d58-9806-8e75bced67a4"> <value><![CDATA[Gratis abonnement of grote beurt]]></value> </text> <text identifier="94e3e08f-e008-487b-9cbd-25d108a9705e"> <value/> </text> <text identifier="73e74b73-f509-4de7-91cf-e919d14bdb0b"> <value/> </text> <text identifier="b870164b-fe78-45b0-b840-8ebceb9b9cb6"> <value><![CDATA[040 123 45 67]]></value> </text> <text identifier="8a91aab2-7862-4a04-bd28-07f1ff4acce5"> <value/> </text> <email identifier="3f15b5e4-0dea-4114-a870-1106b85248de"> <value/> <text/> <subject/> <body/> </email> <link identifier="0b3d983e-b2fa-4728-afa0-a0b640fa34dc"> <value/> <text/> <target/> <custom_title/> <rel/> </link> <relateditems identifier="7056f1d2-5253-40b6-8efd-d289b10a8c69"/> <rating identifier="cf6dd846-5774-47aa-8ca7-c1623c06e130"> <votes><![CDATA[1]]></votes> <value><![CDATA[1.0000]]></value> </rating> <googlemaps identifier="160bd40a-3e0e-48de-b6cd-56cdcc9db892"> <location><![CDATA[50.895711,5.955427]]></location> </googlemaps> </elements>'; Hi. I have some code which needs to return a single variable from the function and stored as a variable within this page, so it can be echoed later on in the page. I couldn't get it to return as a variable, so i used "return compact();" to return the variable and "extract (myFunction());" to extract it to variables. However, when I turned on php's display errors and error reporting function, I got an error message saying "Warning: extract() [function.extract]: First argument should be an array in /my/web/site/index.php on line 6" (which is where my extract function is). This works fine with passing more than one variables through, is there another way pass one variable from a function to be stored as a variable on the page which called the function? Here is the function: Code: [Select] <?php //This is a list of numeric error codes against their text. this will return the error code as the variable $issue function checkLoginIssue() { //If there is an error code if (isset($_GET["issue"])) { //cycle through the list until the code is reached, return the text and break the switch switch ($_GET["issue"]) { case "1": $issue = '<p class="warning">Please log in to view this page</p>'; break; case "2": $issue = '<p class="warning">Wrong Username or Password</p>'; break; case "3": $issue = '<p class="warning">No user found with those details</p>'; break; } //return the variable in an array with a single value return compact('issue'); } } ?> And here is the code which calls the function: Code: [Select] <?php extract(checkLoginIssue()); ?> Hello First of all i am very weak about OOP and classes in php. I am learning now but i stuck with very silly problem. My codes are below. <?php class myTestClass { function __construct() { $this->OldName("This is Old Name"); } function OldName($VeryOld) { if($VeryOld == "This is Old Name") $this->NewName(); else $VeryOld = "Something Wrong"; return $VeryOld; } function NewName() { echo "This is Brand New Name"; } } $i = new myTestClass(); ?> if i send value to OldName "This is Old Name" then codes works fine. But if i send "This is Old Nameeee" then does not appear anything. what i want to do is print "Something Wrong" text if i enter different value. I have no idea what return do and how it do? How to retrieve/print "Something Wrong"? i can do that with echo but i want to transfer result of return to another function. Really appreciate for any help/idea. return (int) $value VS return $value
What is the purpose of using int in a bracket? return (int) $value
Which is the best and safest method?
Thank you
Hi Everyone,
My name is Raoul Grosser, live in The Netherlands.
I'm a front/backend developer working with AngularJS and Bootstrap and Symphone2.
I've been writing PHP code for over 4 years now my focus is on opensource projects.
If you have any question, please let me know!
If a user is on Page X, but not logged in, when they log in to my website, I want them to return back to Page X (in this example). To handle this, I am adding this code to the top of each webpage... Code: [Select] // Set current Script Name. $_SESSION['returnToPage'] = $_SERVER['SCRIPT_NAME']; And then as part of my Log In script I have... Code: [Select] // Redirect User. if (isset($_SESSION['returnToPage'])){ header("Location: " . BASE_URL . $_SESSION['returnToPage']); }else{ // Take user to Home Page. header("Location: " . BASE_URL . "index.php"); } What do you think about this approach? Thanks, Debbie Hey all. My site has a config database table that has a column showlogin to set whether or not login functionality is enabled. I'm playing around with MySQLi, Classes, and Returns. My return is always 1. Where am I going wrong? test.php <?php // Start Session session_start(); // Production Settings ini_set('display_errors', 1); mysqli_report(MYSQLI_REPORT_ALL); include 'db.php'; $mysqli = new mysqli($host, $user, $pass, $db); class styles { function showlogin($show) { global $mysqli; $select = $mysqli->query("SELECT showlogin FROM config LIMIT 1"); $value = $select->fetch_object(); if ($value->showlogin = 1) { return 1; } return 0; } } $login = new styles(); echo $login->showlogin($show); ?> Where should I validate the return value?
In the function should I validate the value before returning it.
Or once the value has been returned, should I check it?
Is it really necessary to validate the return value?
Thank you.
Why it's print -2.8421709430404E-14; <?Php function getDiscount() { $discount = 100; return (245/100) * $discount; } echo 245-getDiscount(); ?> I am trying make my code display different things depending on how many rows are returned This is my code Code: [Select] <?PHP include 'db_con.php'; $month = date("n"); $day = date("j"); $sql = mysql_query("SELECT * FROM table WHERE month = $month AND day = $day ")or die(mysql_error()); while($row = mysql_fetch_array($sql) ) if (mysql_fetch_array($row = 1 ) ) ///THIS IS AN ERROR BUT IF ONE ROW RETURNED THEN THIS { echo "ONE THING"; } elseif (mysql_fetch_array($row >1 ) )////IF > 1 ROW RETURNED THAN THIS { echo"TWO THINGS"; } else { echo "SOMETHING ELSE "; } ?> I have tried several variations of the above code but cannot get it to work. Thanks for any help anyone can give me. Hi guys! I'm new to PHP and I'm using Drupal and there's a function that one block will be called if PHP scripts returns value TRUE. Now I want my "Search" to only show at ALL THE other pages but not index. With the code: if (Url::exists('http://www.example.com')) I get my Search function to return TRUE so it will be showed on index page only, but not on any other pages!! So I kinda need this on reverse - how do I get a TRUE value for something that excists? In this case it would be www.example.com, or if anyone else has any other ideas I would be very thankful! Hi, i got this function to get the wordCount that i store in a tabel: Code: [Select] function getWordCount($word) { $query = "SELECT count FROM uniqueWords WHERE word='$word'"; $data = execQuery($query); return $data; } Only it returns an array, what i want is to have it return a integer, how can i do that? Script:
<?php class Article{ public function fetch_all(){ global $pdo; $query = $pdo->prepare("SELECT * FROM `articles` ORDER BY `article_timestamp` DESC"); $query->execute(); return $query->fetchAll(); } public function fetch_data($article_id){ global $pdo; $query = $pdo->prepare("SELECT * FROM `articles` WHERE `article_id` = ?"); $query->bindValue(1, $article_id); $query->execute(); return $query->fetch(); } /* * These have gotten added later on. */ public function delete($id){ global $pdo; $query = $pdo->prepare("DELETE FROM `articles` WHERE `article_id` = ?"); $query->bindValue(1, $id); $query->execute(); // The "return" here. } public function edit_page($title, $content, $aticle_id){ global $pdo; $query = $pdo->prepare("UPDATE `articles` SET `article_title` = ?, `article_content` = ? WHERE `article_id` = ?"); $query->bindValue(1, $title); $query->bindValue(2, $content); $query->bindValue(3, $article_id); $query->execute(); // The "return" here. } } ?>I have this from a tutorial. In the function "fetch_all()" it uses "fetchAll()" at the spot where the "return" is, and in the function "fetch_data()" it uses "fetch()" at the spot where the "return" is. My Question: What may have to use for the function "delete()" and the function "edit_page()" at the spot where "return" would be? Edited by glassfish, 29 October 2014 - 12:32 PM. Hi all, I am kinda stuck on the return() statement in the php.net manual about control structures. (http://au.php.net/manual/en/function.return.php) All I see is notes on when not to use it and some scary examples with loads of foo and bar but, it's hard to find out when it would be nice to use it. At the moment i am thinking its another way of echo, but I bet that's wrong. If someone could enlighten me a bit on when return() is useful I would be very happy since i see it more often everyday. CHeers! Say I have my login form which then when person tries to log in with the wrong user name and password and sent straight back to the log in page, how do I send back they got the password and/or username wrong. I read somewhere in some code header("location: index.php&$errorvariable"); or something like that. I haven't tested it, not even sure how to get it to work on the index, would I just use an isset on a get/post to check if it exists then echo the error? Hi all, can you give me suggestion how to return value from function like this Code: [Select] function returnArray(){ for($i=1; $i<=3; $i++){ return $i; //how to return this as array?? } } when I code "echo" inside the function then call the function it give me output => 123 but when I code "return" inside the function, it will give output => 1 Can you suggest me how to output it as array? Hey, I've not used PHP for a while and never really used classes! I was reading some code today and I saw a statement something like: Code: [Select] $s = &MyClass::("Something"); From reading the PHP Manual it has an example which looks like this for 5.3, however my server still uses 5.2 (.9), how do I do similar using that? Preferably something along these lines... Code: [Select] class spook{ function __construct($n){ if($n==1){ return "hello"; } else { return "goodbye"; } } } $a=spook::(); print $a; Cheers! i.e. What was the old method before the Scope resolution operator? |