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PHP - Trying To Get Property Of Non-object (newbie)
Hello, I'm currently in the process of trying to learn php. I've been working on an issue with something I am trying to code from a book I purchased "PHP and MySQL Web Development 5th Ed." by Luke Welling and Laura Thomson.
So far the book has been great, but I'm trying to figure out using MySQL and php. When I try to run this particular script for a query for a book store, I get the error: Notice: Trying to get property of non-object in C:\php-book\ch11\results.php on line 37. This is the code: Code: [Select] $query = "select * from books where ".$searchtype."like '%".$searchterm."%'"; $result = $db->query($query); $num_results = $result->num_rows; echo "<p>Number of books found: ".$num_results."</p>"; for($i=0; $i<$num_results; $i++) { $row = $result->fetch_assoc(); echo "<p><strong>".($i+1).". Title: "; echo htmlspecialchars(stripslashes($row['title'])); echo "</strong><br />Author: "; echo stripslashes($row['author']); echo "<br /> ISBN: "; echo stripslashes($row['isbn']); echo "<br />Price: "; echo stripslashes($row['price']); echo "</p>"; } $result->free(); $db->close(); Line 37 is specifically: $num_results = $result->num_rows; I've been bashing my head for a couple of hours here, thank you in advance to whoever can offer any help. Similar TutorialsHey all, I want to have an object that has a property which is an object containing instances of other objects. I try this: Code: [Select] class Blog extends Posts { public $has_posts; public function __construct($a,$b,$c){ $has_posts = (object) array_merge((array) $a, (array) $b, (array) $c); } } class Posts { public $b; public function __construct($b){ $this->b = $b; } } $post1 = new Posts(1); $post2 = new Posts(2); $post3 = new Posts(3); $blog = new Blog($post1,$post2,$post3); var_dump($blog->has_posts); //null foreach($blog->has_posts as $post){ //Invalid argument supplied for foreach() echo $post->b; } But as you see, has_posts is null, not an object containing other objects. Thanks for response. Hi all, I have a script which I coded not long ago which works fine but there is one error which says: Notice: Trying to get property of non-object in /home/www/***-*****.com/hts.php on line 374 I carnt see why its showing the error. $fetch2=mysql_query("SELECT crew FROM users WHERE username='$username'") or die (mysql_error()); $fetch1 = mysql_fetch_object($fetch2); $crewrep1=mysql_query("SELECT * FROM crews WHERE name='$fetch1->crew'") or die (mysql_error()); $crewrep = mysql_fetch_object($crewrep1); $result = $rep + $reps; $result55 = $crewrep->rep + $reps; // Line 374 Can anyone else see why its showing the error? Thanks for your help. I've been getting this error message: Trying to get property of non-object in /application/controllers/index.php on line 37 Here is line 37 $this->view->title = $pageInfo[0]->title; any help would be much appreciated. Hi Guys Trying to get xml elements to display in a html table using the following code Code: [Select] <?php session_start(); include_once('includes/connect_inc.php'); $file="https://www.cdlvis.com/lookup/getxml?username=username&mode=test&key=password&vrm=".$_POST['veh_reg'].""; $dom=new DOMdocument(); $dom->load($file); $xml=simplexml_import_dom($dom); ?> and Code: [Select] <form name="vehicle_details" method="post" action="add_vehicle.php"> <table> <tr> <td>Registration Number:</td><td><input name="reg_num" type="text" value="<?php echo $xml->result[0]->vrm;?>" readonly="true" /></td></tr> <tr> <td>Make:</td><td><input name="make" type="text" value="<?php echo $xml->result[0]->make;?>" readonly="true" /></td></tr> <tr> <td>Model:</td><td><input name="model" type="text" value="<?php echo $xml->result[0]->model;?>" readonly="true" /></td></tr> <tr> <td>Date of Manufactu </td><td><input name="date_man" type="text" value="<?php echo $xml->result[0]->date_manufactured;?>" readonly="true" /></td></tr> <tr> <td>Date of First Registration:</td><td><input name="date_reg" type="text" value="<?php echo $xml->result[0]->first_registered;?>" readonly="true" /></td></tr> <tr> <td>Colour:</td><td><input name="colour" type="text" value="<?php echo $xml->result[0]->colour;?>" readonly="true" /></td></tr> <tr> <td>Body Style:</td><td><input name="body" type="text" value="<?php echo $xml->result[0]->body;?>" readonly="true" /></td></tr> <tr> <td>Number of Doors:</td><td><input name="doors" type="text" value="<?php echo $xml->result[0]->doors;?>" readonly="true" /></td></tr> <tr> <td>Engine Size:</td><td><input name="engine_size" type="text" value="<?php echo $xml->result[0]->engine_size;?>" readonly="true" /></td></tr> <tr> <td>Fuel Type:</td><td><input name="fuel_type" type="text" value="<?php echo $xml->result[0]->fuel;?>" readonly="true" /></td></tr> <tr> <td>Gearbox Type:</td><td><input name="gearbox" type="text" value="<?php echo $xml->result[0]->gearbox_type;?>" readonly="true" /></td></tr> <tr> <td>Previous Keepers:</td><td><input name="keepers" type="text" value="<?php echo $xml->result[0]->previous_keepers;?>" readonly="true" /></td></tr> <tr> <td>BHP:</td><td><input name="bhp" type="text" value="<?php echo $xml->result[0]->smmt_power_bhp;?>" readonly="true" /></td></tr> <tr> <td>Emissions:</td><td><input name="co2" type="text" value="<?php echo $xml->result[0]->smmt_co2;?>" readonly="true" /></td></tr> <tr> <td><input name="try_again" type="button" value="Try Again" /></td><td><input name="submit" type="submit" value="Next Stage" /></td></tr> </table> </form> What have I done wrong? Keep getting this error from line 19 (Notice: Trying to get property of non-object in /clientdata/zeus-dynamic-1/s/o/blahblah/www/tyson/onion.php on line 18)... have no idea how to get rid of it. Do I have to use isset? If so.. where??? (obviously I've replaced site address with website) Code: [Select] include('simple_html_dom.php'); $story = array(); getArticles('website'); function getArticles($page) { global $story, $desc, $read; $html = new simple_html_dom(); $html->load_file($page); $items = $html->find('div[id=story_content]'); foreach($items as $post) { $story[] = array($post->children(0)->plaintext, $post->children(2)->next_sibling()->innertext, $post->children(4)->innertext); } } $i = 0; foreach($story as $item) { $syurl = str_replace('href="', 'href="http://website', $item[2]); echo '<p class="storytitle">' . $item[0] . '</p>'; echo '<p class="storyexcerpt">' . $item[1] . '</p>'; echo '<p class="storyread">' . $syurl . '</p>'; if (++$i == 3) break; } Any ideas? This line is causing the issue: $story[] = array($post->children(0)->plaintext, $post->children(2)->next_sibling()->innertext, $post->children(4)->innertext); Likewise, it does post the 3 storys below the 2 error lines...? I am trying to run a count query and faced with the error: Notice: Trying to get property of non-object in Not sure how to resolve this error in these lines:
if($result->num_rows > 0){
while($row = $result->fetch_rows()){
Code:
<?php
$sql = "SELECT
Form_Group
COUNT(Presence LIKE '/') AS Present,
COUNT(Presence LIKE 'N') AS Absent,
FROM 'attendance'";
$result = $conn->query($sql);
?>
<?php
//Fetch Data form database
if($result->num_rows > 0){
while($row = $result->fetch_rows()){
?>
<tr>
<td><?php echo $row['Form_Group']; ?></td>
<td><?php echo $row['Present']; ?></td>
<td><?php echo $row['Absent']; ?></td>
</tr>
<?php
}
}
else
{
?>
<tr>
<th colspan="6">There's No data found!!!</th>
</tr>
<?php
}
?>
We have a complex, json object which is multiple levels deep. We need to search for a given property/key in the entire object (not just first occurrence, but all), and if we find the property, return where in the object each property exists, so we can modify the properties value. Figure it needs to be recursive. I want to save class property values and want to write these in the database after being called from another function. Code: [Select] class model{ public $dbh; public $user_arr=array('username','password','email','location','interest','homepage'); public function insert_data() { $sql = "INSERT INTO account VALUES ('" .$user_info['username']."','".$user_info['password'] ."','".$user_info['email']."', 'user','".$user_info['location']."','".$user_info['interests'] ."','".$user_info['homepage']."')"; //if(isset($data)) echo $sql; } public function data_approoved($user){ //$user_info = new array(); $user_arr['username'] = $user['username']; $user_arr['password'] = $user['password']; $user_arr['email'] = $user['email']; $user_arr['location'] = $user['location']; $user_info['interests'] = $user['interests']; $user_info['homepage'] = $user['homepage']; Model::insert_data(); } } }//class ended The approoved_data function is supposed to set the values of $user_info array which should be later on stored in database. Please somebody help me. So I'm getting a "Notice: Trying to get property of non-object in" error when I'm trying to pull data from a xml. I have a complete xml that has all of the potential node that it could ever have and it loads up fine -no errors, but when I load a different xml that doesn't have all of the possible nodes it returns this error several times here is a sample of my code: $source = 'TestFile.xml'; $xml = new SimpleXMLElement($source,null,true); $result = mysql_query("SELECT * FROM tblvalues") or die(mysql_error()); //Return the table row by row while($row = mysql_fetch_array($result)) { $curblk = substr($row['fldelement'],0,3); switch ($row['fldelement']){ case "E06_04": case "E06_05": case "E06_07": case "E06_08": $cursub = $curblk."_04_0"; $xmlVal = $xml->Header->Record->$curblk->$cursub->$row['fldelement']; //grab value from xml break; ... ... ... // the cases go on for a while... ... case "E07_05": case "E07_06": case "E07_07": case "E07_08": $cursub = $curblk."_03_0"; $cursub2 = $curblk."_05_0"; $xmlVal = $xml->Header->Record->$curblk->$cursub->$cursub2->$row['fldelement']; //this is the line that the error points to break; ... ... ... And here is the sample of the xml that returns the error: Code: [Select] <E07> <E07_01>-20</E07_01> <E07_02>0</E07_02> <E07_15>-25</E07_15> <E07_16>-25</E07_16> <E07_17>-25</E07_17> <E07_18_0> <E07_18_01> <E07_18>-20</E07_18> <E07_19>-20</E07_19> <E07_20>-20</E07_20> </E07_18_01> .... .... .... The obvious problem (to me) is that my code is trying to return a value from a nonexistent xml node, for example: $xmlVal = $xml->Header->Record->$curblk->$cursub->$cursub2->$row['fldelement']; is looking for: $xmlVal = $xml->Header->Record->E07->E07_03_0->E07_05_0->E07_05 Ok, I get that, so how do I rewrite this so it's not blowing up on something so simple? Quick notes: -This same code works for a more complete xml -Rewriting the xmls is not an option as I have no control over those Edit: Almost forgot, thanks! *Mods* PLEASE don't move this to the OOP section again. I've had no luck there, and it's not specifically an OOP question. Hi everyone, I just want to know if there's a shorthand way to create objects, as there is for arrays: Code: [Select] // shorthand array creation $foo = array( 'bar' => 0, 'baz' => array ( 'name' => 'Dave', 'gender' => 'male' ) ) Code: [Select] // is there a way to do this with objects? // not that I know so far... $foo = object( bar->0, 'baz' -> object ( name -> 'Dave', gender -> 'male' ) ) I find object-access syntax is often quicker and easier to write than array-access syntax. Have I missed something obvious that I can't just write it out this way? Cheers, Dave I have a Soup object in a Bowl object in a Microwave object. The Microwave object has the methods: receiveItem(Bowl $b) cookItem(???) I want the Microwave to be able to set the Soup->temperature but I'm not how to do that? Make sense? TomTees This topic has been moved to Application Frameworks. http://www.phpfreaks.com/forums/index.php?topic=323395.0 I get the following error when I try to pass a value to a methiod in a loop: Warning: Attempt to assign property of non-object in /Users/staceyschaller/Sites/dev_zone/ckwv2/classes/class.php on line 670 This one has me very baffled. It will work the first time, and seems to work every other time, so I have no clue what is wrong. Here is the code: This code is part of my "display" class: function display_partner ($type,$loc,$rand=0,$narrow=0) { $this->partners = new partner($this->cxn); $display = ' <div id="cont_info" class="partner-list"> <div> <h3 class="settings">'.ucfirst($loc).' '.ucfirst($type).last_letter($type).'s</h3> </div> <div class="settings-value" style="height:12px;padding:0;margin:0;text-align:right;padding-right:10px;"> <a href="" class="trunc">Add your organization to this list</a></p> </div> <div style="height:2px;padding:0;margin:0;"> <hr class="account" /> </div> '; $ids = $this->partners->get_partners_list($type,$loc,$rand); for ($b=0;$b<sizeof($ids->id);$b++) { $this->partnerID = $ids->id[$b]; $display .= ($narrow)? $this->card_partner_narr():$this->card_partner(); if ($b!=(sizeof($ids->id)-1)) { $display .= '<hr class="account" />'; } } if (sizeof($ids->id)==0) { $display .= '<div style="color:#999999;display:line;text-align:center;height:20px;">No Partners found for '.ucfirst($loc).' '.ucfirst($type).'</div>'; } $display .= ' </div>'; return $display; } function card_partner () { $this->partners->set_partner_id($this->partnerID); $part_info = $this->partners->get_partner_info(); if ($part_info) { $display .= ' <table class="settings"> <tr> '.$this->show_if($part_info['partLogo']['val'],'<td class="settings-value" rowspan="2"><img src="'.LOGO_FOLDER.$part_info['partLogo']['val'].'" '.resize_img(LOGO_FOLDER.$part_info['partLogo']['val'],175).'alt="'.$part_info['partName']['val'].'" /></td>').' <td class="settings-value" colspan="2"><h5>'.$part_info['partName']['val'].'</h5></td> </tr> <tr> <td class="settings-value"> <span style="color:999999;">'.$part_info['partAddress']['val'].'<br /> '.$part_info['partCity']['val'].', '.$part_info['partST']['val'].' '.$part_info['partZIP']['val'].'<br /> '.$part_info['partPhone']['val'].'</span><br /> <a href="'.$this->form->show_href($part_info['partWeb']['val']).'" target="_blank">'.$part_info['partWeb']['val'].'</a> </td> <td class="settings-value">'.$part_info['partInfo']['val'].'</td> </tr> </table> '; } return $display; } This code is part of my "partners" class: function set_partner_id($partID) { echo '<p>partID: '.$partID.' '.gettype($partID).'<br> $this->partner->id: '.$this->partner->id.'</p>'; $this->partner->id = $partID; ///*** ERROR HAPPENS HERE ***/ echo '<p>id set: '.$this->partner->id.'<br> $this->partner->id: '.$this->partner->id.'</p><hr>'; } function get_partner_id() { return $this->partner->id; } // gets user info at login function get_partner_info() { $this->partner = $this->cxn->proc_info('partner','partID',$this->partner->id);//$this->partner->id return $this->partner; } The following is the output generated: partID: 24 string $this->partner->id: id set: 24 $this->partner->id: 24 partID: 26 string $this->partner->id: Warning: Attempt to assign property of non-object in /Users/staceyschaller/Sites/dev_zone/ckwv2/classes/class.php on line 670 id set: $this->partner->id: partID: 17 string $this->partner->id: id set: 17 $this->partner->id: 17 partID: 25 string $this->partner->id: Warning: Attempt to assign property of non-object in /Users/staceyschaller/Sites/dev_zone/ckwv2/classes/class.php on line 670 id set: $this->partner->id: As you can see, the value passes to $this->set_partner_id($partID) each time. It is formatted as a string. When it assigns the value to $this->partner->id, however, sometimes it works, and sometimes it doesn't. It's probably something obvious, but I've racked my brain to see what it is. Any ideas? First let me just say, I am by no means a coder. But I am trying to set up a website for a friend.
I am no novice when it comes to the web design part, but I am one when it comes to PHP code.
That said, I have a joomla site on my local machine for the time being. I am using joomla for this site. Joomla wont help me with this problem. They refer me to the creator of the extension.
Well, problem is, I have posted there and have not had any answer yet either. The problem is when I use a form component and ue the select box option.
Anyway, the problem I am having is:
Notice: Undefined property: stdClass::$listitemid in C:\xampp\htdocs\joomla30\administrator\components\com_visforms\helpers\html\visforms.php on line 505 Notice: Undefined property: stdClass::$listitemvalue in C:\xampp\htdocs\joomla30\administrator\components\com_visforms\helpers\html\visforms.php on line 505 Notice: Undefined property: stdClass::$listitemlabel in C:\xampp\htdocs\joomla30\administrator\components\com_visforms\helpers\html\visforms.php on line 505Here is the code I found the $returnopts[] = array( 'id' => $option->listitemid, 'value' => $option->listitemvalue, 'label' => $option->listitemlabel, 'selected' => $selected);What is causing this problem? How can I fix this? Edited by CrazyYoda, 30 December 2014 - 05:50 PM. Hey Guys.
I have a class named CoreCartFunctions. In the class there is a protected property named $menu_item_id which is initialized as null.
A method named GetMenuItemId assigns the $menu_item_id its value. I have tested it out using the following, to see if a value got returned and it did
fb($menu_item_id->GetMenuItemId(), "This is the menu id");The problem is when I access the property from a different public method in the same class it dones't return anything. fb($menu_item_id->DisplayMenuItems());It only returns something when I hard code a value to it.... Not sure why this is happening. Here is my full code. Please not the example below may have some syntax errors since I just copied and paste pieces of my code, to show a quick and dirty example.
class CoreCartFunctions {
protected $menu_item_id = NULL;
public static $items; //Equal to the a long session string
protected function GetMenuItemId() {
foreach (self::$items as $menu_item_id_session) {
/***********************************
Get the id of the menu item item
************************************/
$this->menu_item_id = preg_match_all('/\-(.*?)\*/',$menu_item_id_session,$match_found)?$match_found[1][0]:"";
// The following line shows example of above line
// $menu_item_id = "12";
public function DisplayMenuItems(){
return $this->menu_item_id; // Doesn't return Item ID
}
}
Hi, I was wondering if someone can help me, I keep getting these errors. Notice: Undefined property: stdClass::$vOptionType in /default/commonFunctions.php on line 267 That is the line from the file. if($rsOptions[$j]->vOptionType=='colour_fromcsv' || $rsOptions[$j]->vOptionType=='size_fromcsv') I was wondering if someone could tell me what it means and possible point me in the right direction on how to fix the issue. Thanks, Jordan For example: class People{ var $them = array(); function groupPeople(){ foreach($this->them as $him){ echo $him.", "; } } } $people = new People; $people->them = array('Harry','Todd'); $people->them = array('Tom','Jerry'); $people->groupPeople(); // result: Tom, Jerry, I think this code is working. However, I need to merge those array above, array('Harry','Todd') and array('Tom','Jerry') So I can get array('Harry','Todd','Tom','Jerry') and a list of names as a result. Maybe I should use array_merge, but how? A little help would be appreciated. Thank you in advanced, ayok Hey Guys. I have a shopping cart script that loops through the shopping cart session array and assigns values to the property of a class. For some weird reason the subtotal property only works when I use the self keyword. If I use the $this-> instance variable the sub total does not get assigned the subtoal price. Its just NULL.
Does anyone have any suggestions as to why it may not be working.
Below is a quick copy and paste of my code. Please be aware that some there may be some syntax mistakes as a result to copying and pasting part of my code that is relevant to this issue. Thanks!
class CoreCartFunctions {
protected static $subtotal;
protected $menu_item_price = NULL;
public function GetMenuItem() {
//self:items is the cart session array that is initilized in a construct method
//Assign the values for each cart array
foreach (self::$items as $menu_item_id_session) {
$this->menu_item_price = getItems($this->menu_item_id,"menu_item_price")*$this->item_qty;
self::$subtotal += $this->menu_item_price;
//Does not work with the following ---> $this->subtotal += $this->menu_item_price;
}
}
Hey Guys. I am trying to assign a property through a method that is called in a swtich method.
After the property gets "assigned" I do a var_dump on the property and it returns NULL?
I am not sure why it returns NULL.... I would really appreciate any help...
class Tea {
public $current_tea;
//Current tea does not get assigned when using the AssignTea($TeaArg) function
private $upcoming_tea = "Blacktea";
public function SelectTea() {
$TeaType = "Black";
switch ($TeaType) {
case "Black":
$this->AssignTea($this->upcoming_tea);
break;
}// End of Swtich
}// End of function SelectTea()
private function AssignTea($TeaArg){
$this->current_tea = $TeaArg;
}
}
$tea = new Tea();
var_dump($tea->current_tea);
Edited by eldan88, 20 May 2014 - 10:07 AM. |
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