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PHP - Function Help
i'm having trouble getting my function to return back variables to the page that called it.
in the function i have variables $student1, $student2 $student3 in a function called getstudent. the code below on page student.php calls the function, if i return $student3 on page student.php if i echo $student3 it is blank. any ideas?.. i don't want to echo it within the function. Code: [Select] $thedatabase = new Database(); $thedatabase->opendb(); $input = $thedatabase->getstudent($student); return $student3; Similar TutorialsHello all, I have some piece of code that is nested like this $variable = 'This is a global argument'; function parentFunction($variable) { function childFunction() { echo 'Argument of the parent function is '.$GLOBALS['variable']; } childFunction(); } parentFunction(5); What I want to know is - Is there a way to access a variable from the parent function without passing arguments to the child function? (Something like how classes have parent::?). I don't want to use $GLOBALS because it might cause some variable collision, and I didn't want to pass arguments because incase I decide to change the arguments in the parent function I'd have to do it in the child function aswell. From my searching around in the Internet it seems like this is not possible, but if theres a slight chance that there might be something out there, i'm willing to give it a shot . Thanks in advance Question 1) Is the only and proper way to call a parent function "parent::function()"? Are there other/better ways from within a child function? Question 2) What are the deciding factors for when to make a function or attribute static? How do you make that decision? Assuming 5.3... Thanks. I need to call usort from a class function, and I'm puzzled about how to define the comparison function. I've tried to define the comparison function in the same class, but I can't get usort to call it. I found one hint that it will work if I make the comparison function static, but I tried that, and it didn't work for me. If I define the comparison function outside the class, it won't have access to object properties that it needs to operate. The only solution I can think of is to define the comparison function outside the class and put the object properties it needs in globals. Is there a cleaner way to do this? I have this function completely written in my class file that I am working on. The point to this function is to be able to check the login of a user or administrator for either of the control panels associated with my site. It will check the session intime as well as the page / module referenced. Once it passes all those checks, it will check and ensure the emailaddress/password stored in the current session still holds true and the account is still active... if the account is still active it will update the lastActivity as well as update all of the session variables with what is currently in the database. What I am looking for is basically a look at the function, see if it looks good.. If there is any part to it that could create security holes for the site just off the login function itself... Usage: $q->validUser($_SESSION['user'], $_mod); <?php function validUser($sess, $p) { if ($sess['inTime'] == '' && $p != 'login' && $p != 'logout') { session_destroy(); $login = '0'; $_int = ''; return $login; } else if ($sess['inTime'] < time()-3600 && $p != 'login') { $sess['inTime'] = ''; session_destroy(); $this->check_login($sess, $p); } else { $this->user = $sess['emailAddress']; $this->pass = $sess['password']; $login = $this->sql_query("SELECT * FROM users WHERE emailAddress = '".$this->user."' AND password = '".$this->pass."' AND status = '1' LIMIT '1'"); if ($login = $this->sql_numrows($login) < 1) { $sess['inTime'] == ''; session_destroy(); $login = '0'; } else { // logged in, lets update the database for last_activity AND the session. $this->sql_query("UDATE users SET lastActivity = '".now()."' WHERE emailAddress = '".$this->user."'"); $login = $this->sql_query("SELECT * FROM users WHERE emailAddress = '".$this->user."' AND password = '".$this->pass."' AND status = '1' LIMIT '1'"); $login = mysql_fetch_assoc($login); foreach ($login as $key => $value) { $sess[$key] = $value; } $sess['inTime'] = time(); $login = '1'; } return $login; } } ?> That is the main function, sql_query and sql_numrows is: <?php function sql_query($query = "", $transaction = FALSE) { unset($this->query_result); if ($query != "") { $this->num_queries++; if ($transation == BEGIN_TRANSACTION && !$this->in_transation) { $result = mysql_query("BEGIN", $this->db_connect_id); if (!$result) { return false; } $this->in_transaction = TRUE; } $this->query_result = mysql_query($query, $this->db_connect_id); } else { if ($transaction == END_TRANSACTION && $this->in_transaction ) { $result = mysql_query("COMMIT", $this->db_connect_id); } } if ($this->query_result) { unset($this->row[$this->query_result]); unset($this->rowset[$this->query_result]); if ($transaction == END_TRANSACTION && $this->in_transaction ) { $this->in_transaction = FALSE; if (!mysql_query("COMMIT", $this->db_connect_id)) { mysql_query("ROLLBACK", $this->db_connect_id); return false; } } return $this->query_result; } else { if ($this->in_transaction ) { mysql_query("ROLLBACK", $this->db_connect_id); $this->in_transaction = FALSE; } return false; } } function sql_numrows($query_id = 0) { if(!$query_id) { $query_id = $this->query_result; } return ($query_id) ? mysql_num_rows($query_id) : false; } ?> Any insight that can help to benefit these functions would be appreciated. I want to define a function instead of repeating query in all my php pages. I call a function by passing an $id value and from that function i have to get all the info related to that id, like name, description and uom.
I am trying to do this, but i dont know how to get these values seperately.
here is my function
function items($item_id)
{
$details = array();
$result = mysql_query("select item_id, name, uom, description from items where item_id=".$item_id."") or die (mysql_error());
while($row = mysql_fetch_array($result))
{
$details[] = array((stripslashes($row['name'])), (stripslashes($row['uom'])), (stripslashes($row['description'])));
}
return $details;
}
and i call my function like this
$info = items($id);Can somebody guide me in this When I put this chunk of code into it's own function: function fetch_all ($dbc, $query) { include ('knuffix_list_func.php'); pagination_start ($dbc, $query); $offset = $pag_array[0]; $rows_per_page = $pag_array[1]; $query = $query . " LIMIT $offset, $rows_per_page"; echo "test query: " . $query; knuffix_list ($query, $dbc); pagination_end ($pag_array); } And when I echo out the query as you can see in the example, then I notice that the variables $offset and $rows_per_page never get appended. I set the variable $pag_array to a global inside the function pagination_start(). It usually works when I DON'T wrap a function around this chunk of code, but if I do wrap a function around everything then the global suddenly won't work anymore. Btw, this also won't work if I wrap a function around the function DECLARATIONS. Any ideas, how I could make it work? Hi all, I want to call a javascript function from a php function like this: public function Buscar() { $HoraInicio = $_POST['edtHoraInicio']; $HoraFin = $_POST['edtHoraFin']; $FechaInicio = $_POST['edtFec1']; $FechaFin = $_POST['edtFec2']; $FechaMax = $FechaFin." ".$HoraFin.":00"; $FechaMin = $FechaInicio." ".$HoraInicio.":00"; $_GET["FechaMax"] = $FechaMax; $_GET["FechaMin"] = $FechaMin; echo $FechaMin; echo "<script language=javascript>alert('Hi.')</script>"; } but the function Buscar never show the alert but shows the $FechaMin I hopu u guys can help me out with this probem Thanks, Siddhartha Hi I have a table class and functions I want to call in another function but can't get it working. Some help will be very welcome. It seesm that the new table class is not working in this function if I pass the values to it, I have tested the class, it does get the post values I post to it so $_POST['id'] are being received as well as all the other $_POST's but the table class and find function is not working, it works fine if I don't put it in a function.. function edit() { if (isset($error)){ $error.="Please fix the error(s) above";} else { if ($_POST['id'] <> "") { $update =& new table($db, 'publisher'); $update->find($_POST['id']); $update->name = $_POST['name']; $update->url = $_POST['url']; $update->contact = $_POST['contact']; $update->address = $_POST['address']; $update->phone = $_POST['phone']; $update->email = $_POST['email']; $update->save(); $error = "The Publisher has been edited"; } } } im using a function which connects to a db called 'comments' and then inside that function i again called another function that will connect to the db 'main' to get avatars.... but as i put Code: [Select] mysql_select_db("main") or die(mysql_error()); on the new function, the original function stops to fetch rows. i tried to remove "mysql_select_db("main") or die(mysql_error());" and used the new function to return some text only and it worked, so i guess the connection to the db was the problem... i tried doing Code: [Select] mysql_query("SELECT * FROM main.avatar INNER JOIN main.list ON main.avatar.title=main.list.id WHERE main.avatar.page_id='$id'"); but it also didnt work I've followed the PHP Freaks pagination tutorial which you can find here. And I also got it to work, the only problem is that the script won't work when I use the query outside of the function. Here's the function: <?php function knuffix_list ($query, $dbc) { // find out how many rows are in the table: $query_row = "SELECT COUNT(*) FROM con"; $query_run = mysqli_query ($dbc, $query_row); $row = mysqli_fetch_row($query_run); $num_rows = $row[0]; // number of rows to show per page $rows_per_page = 5; // find total pages -> ceil for rounding up $total_pages = ceil($num_rows / $rows_per_page); // get the current page or set a default if (isset($_GET['current_page']) && is_numeric($_GET['current_page'])) { // make it an INT if it isn't $current_page = (int) $_GET['current_page']; } else { // default page number $current_page = 1; } // if current page is greater than total pages then set current page to last page if ($current_page > $total_pages) { $current_page = $total_pages; } // if current page is less than first page then set current page to first page if ($current_page < 1) { $current_page = 1; } // the offset of the list, based on current page $offset = (($current_page - 1) * $rows_per_page); echo "test " . $query; // SCRIPT ONLY WORKS IF I INSERT QUERY HERE $query = "SELECT * FROM con, user WHERE con.user_id = user.user_id ORDER BY contributed_date DESC LIMIT $offset, $rows_per_page"; $data = mysqli_query ($dbc, $query) or die (mysqli_error ($dbc)); // Loop through the array of data while ($row = mysqli_fetch_array ($data)) { global $array; // Variables for the table $con_id = $row['con_id']; $likes_count = $row['likes']; $dislikes_count = $row['dislikes']; $dbuser_name = $row['nickname']; $dbuser_avatar = $row['avatar']; $user_id = $row['user_id']; // The TABLE echo "<table padding='0' margin='0' class='knuffixTable'>"; echo "<tr><td width='65px' height='64px' class='avatar_bg' rowspan='2' colpan='2'><img src='avatar/$dbuser_avatar' alt='avatar' /></td>"; echo "<td class='knuffix_username'><strong><a href='profile.php?user=$dbuser_name' title='Profile of $dbuser_name'>" . $dbuser_name . "</a> ___ " . $user_id . "____ <form action='' method='POST'><button type='submit' name='favorite' value='fav'>Favorite</button></form>"; echo "</strong><br />" . $row['category'] . " | " . date('M d, Y', strtotime($row['contributed_date'])) . "</td></tr><tr><td>"; echo "<form action='' method='post'> <button class='LikeButton' type='submit' name='likes' value='+1'>Likes</button> <button class='DislikeButton' type='submit' name='dislikes' value='-1'>Dislikes</button> <input type='hidden' name='hidden_con_id' value='" . $con_id . "' /> </form></td><td class='votes'>Y[" . $likes_count . "] | N[" . $dislikes_count . "]</td></tr>"; echo "<tr><td class='knuffix_name' colspan='3'><strong>" . htmlentities($row['name']) . "</strong><br /></td></tr>"; echo "<tr><td colspan='2' class='knuffix_contribution'><pre>" . $row['contribution'] . "</pre><br /></td></tr>"; echo "</table>"; // POST BUTTONS inside the table $likes = $_POST['likes']; $dislikes = $_POST['dislikes']; $con_id = $_POST['hidden_con_id']; $favorite = $_POST['favorite']; $array = array ($likes, $dislikes, $con_id, $user_id, $favorite); } /********* build the pagination links *********/ // BACKWARD // if not on page 1, show back links and show << link to go back to the very first page if ($current_page > 1) { echo " <a href='{$_SERVER['PHP_SELF']}?current_page=1'><<</a> "; // get previous page number and show < link to go to previous $prev_page = $current_page - 1; echo " <a href='{$_SERVER['PHP_SELF']}?current_page=$prev_page'><</a> "; } // CURRENT // range of number of links to show $range = 3; // loop to show links in the range of pages around current page for ($x = ($current_page - $range); $x < (($current_page + $range) + 1); $x++) { // if it's a valid page number... if (($x > 0) && ($x <= $total_pages)) { // if we're on current page if ($x == $current_page) { // highlight it but don't make a link out of it echo "[<b>$x</b>]"; // if it's not the current page then make it a link } else { echo "<a href='{$_SERVER['PHP_SELF']}?current_page=$x'>$x</a>"; } } } // FORWARD // if not on the last page, show forward and last page links if ($current_page != $total_pages) { // get next page $next_page = $current_page + 1; // echo forward link for next page echo " <a href='{$_SERVER['PHP_SELF']}?current_page=$next_page'>></a> "; // echo forward link for last page echo " <a href='{$_SERVER['PHP_SELF']}?current_page=$total_pages'>>></a> "; } /***** end building pagination links ****/ mysqli_close($dbc); } ?> As you can see above, the script will only work if I put the query right below the $offset variable and above the $data variable. I put the test echo above the query to see how the query looks like when I induce the query from the outside through the function parenthesis into the function, and this is what I get printed out: test SELECT * FROM con, user WHERE con.user_id = user.user_id ORDER BY contributed_date DESC LIMIT , Obviously the $offset and the $rows_per_page variables are not set, when I induce the query from the outside into the function. So in that sense my question is: How can I induce the query from the outside into the function SO THAT the $offset and the $rows_per_page variables are set as well and NOT empty? p.s. I need the query outside of the function because I'm using a sort by category functionality. can you do that with php? Code: [Select] Database2() { function test($id) { $newdb = new Database2(); $newdb->test($id); } }
window.setInterval(function(){
s="<?= $lastid ?>";
$.post('../action/updatestream.php',{statusid:s.val()},function(e){
alert(e)
});
}, 10000);
Why isn't it working?Thanks, Hello Everyone I have written a simple mail function to be emailed to a certain person on submission. On submission they would also like to have attachments sent to them. I got the email being sent but I can;t get the attachments to work. I have read several different examples and tutorials and none of them work. This is my code so far without any code for file attachment <?php $project_name = $_POST['project_name']; $needed = $_POST['date_needed']; $submitted = $_POST['date_submitted']; $department = $_POST['department']; $contact = $_POST['contact_person']; $extension = $_POST['extension']; $project_type = $_POST['project_type']; $published = $_POST['date_last_published']; $description = $_POST['description']; $color = $_POST['color']; $pdf = $_POST['pdf_needed']; $web = $_POST['web_needed']; $quanity = $_POST['quanity']; $email = "mdmartiny@sc4.edu"; $subject = "SC4 Graphics Design Service Request Form"; $headers .= "MIME-Version: 1.0\r\n"; $headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n"; $message = "<html><body> <table width=\"100%\" border=\"0\" cellspacing=\"5px\" > <tr><td></td> <td>Project name: $project_name</td> <td></td> <td>Date needed by: $needed</td> </tr> <tr> <tr> <td></td> <td colspan=\"3\" align=\"left\" valign=\"top\"><strong><font size=\"+1\">Submitted to graphic designer</font></strong></td></tr> <tr><td height=\"25\"></td><td>Date $submitted</td><td>Department $department</td><td></td></tr> <tr><td height=\"25\"></td><td>Contact Person $contact</td><td>Extension $extension</td><td></tr> <tr><td height=\"25\"></td><td>Type of project $project_type</td><td colspan=\"2\">Approximate date of last publication $published</td></tr> <tr><td height=\"25\"></td><td colspan=\"3\">Project description/special instructions</td> <tr><td></td>><td colspan=\"3\">$description</td></tr> <tr><td height=\"25\"></td><td>Color $color</td><td>PDF needed $pdf</td><td>Website update needed $web</td></tr> <tr><td ></td><td>Estimated print quanity $quanity</td><td></td><td></td></tr> <tr> <td colspan=\"4\" align=\"left\" valign=\"top\"><hr height=\"5\"/> <strong><font size=\"+1\">Graphics office use only</font></strong></td> </tr> <tr> <td height=\"25\" width=\"2%\"> </td> <td width=\"34%\">Print Shop Color copier</td> <td colspan=\"2\">Print Vendor_______________________________________</td> </tr> <tr> <td height=\"25\"> </td> <td><strong><font size=\"+1\">Project tracking</font></strong></td> <td> </td> <td> </td> </tr> <tr> <td height=\"25\"> </td> <td colspan=\"3\">Received by graphic designer_______________________ Date _______</td> </tr> <tr> <td height=\"25\"> </td> <td colspan=\"3\"> <table width=\"100%\" height=\"35\"> <tr> <td>Approved by executive director__________ Date_________</td><td><input type=\"checkbox\"> Revisions needed<br /><input type=\"checkbox\"> Revisions made ______ Date_______</td><tr> </table> </td> </tr> <tr> <td height=\"25\"> </td> <td colspan=\"3\">Completed and spell checked by graphic designer___________________________ Date__________</td> </tr> <tr> <td> </td> <td align=\"center\" colspan=\"3\"> <table cellpadding=\"10px\" cellspacing=\"0\" border=\"1\" width=\"100%\"> <tr bgcolor=\"#CCCCCC\"> <td> <table> <tr> <td> Proofread by marketing coordinator __________ Date__________</td> </tr> <tr> <td> Proofread by secretary __________ Date__________ </td> </tr> </table> </td> <td> <input type=\"checkbox\"> Revisions needed <br> <input type=\"checkbox\"> Revisions made ____ Date_____ </td> </tr> </table></td> </tr> <tr> <td></td> <td colspan=\"3\"> <table width=\"100%\" height=\"75\"> <tr> <td>Proofread by executive director______ Date______ </td><td><input type=\"checkbox\"> Revisions needed<br /> <input type=\"checkbox\"> Revisions made ______ Date_______</td> </tr> </table> </td> </tr> <tr> <td></td> <td colspan=\"3\"> <table width=\"100%\" height=\"75\"> <tr> <td> Approval by requesting department __________ Date_________ <br /> <strong><font size=\"-1\">(Include all paperwork when returning)</font></strong></td><td><input type=\"checkbox\"> Revisions needed<br /><input type=\"checkbox\"> Revisions made ______ Date_______</td> </tr> </table> </td> </tr> <td></td height=\"25\"> <td colspan=\"3\">Final approval by executive director _________________________________________ Date_________ </td> </tr> <tr> <td height=\"75\"></td> <td><input type=\"checkbox\"> Printed ____ Date _____</td> <td colspan=\"2\"><input type=\"checkbox\"> PDF created _____ Date _____<br /> <input type=\"checkbox\"> Website updated _____ Date _____</td> </tr> </table>"; $message .= "</body></html>"; mail($email, $subject, $message, $headers, "From: $email"); echo "The email has been sent."; ?> How can I call a public function inside of another public function? The get_primary_edge() says it's undefined, but it's just another public function in the class so shouldn't this work? Code: [Select] public function get_dynamic_edge($uid) { $uid = (int)$uid; $sql = "( SELECT `users`.`id` FROM partners INNER JOIN `users` ON `partners`.`user_id` = `users`.`id` WHERE partners.friend_id = '${uid}' AND `approved` = 1 ) UNION ALL ( SELECT `users`.`id` FROM `partners` INNER JOIN `users` ON `partners`.`friend_id` = `users`.`id` WHERE `partners`.`user_id` = '${uid}' AND `approved` = 1 )"; $result = mysql_query($sql) or die(mysql_error()); $i = 0; while (($row = mysql_fetch_assoc($result)) !== false) { $dynamic[$i] = array( 'uid' => $row['id'], 'score' => get_primary_edge($row['id']), ); $i++; } print_array($dynamic); } Hi, Here is a part of my code to generate a URL to output to some table headers. Code: [Select] $URL = "order_sheet.php?sortby=orders_id&fromdate=" . $fromdate . "&todate=" . $todate . "&sortorder=" . $newsortorder; On each heading, I need to do something like this: $URL['orders_id'], $URL['customer_name'], etc to decide on which "sortby" to use. I know I could make multiple varibles for each headding, but thats the lazy way and I need to learn! Thanks I need the below code to be in an if else condition so i can excute it on certain parts of the website Hello Guys, I am trying to understand how to return a value from a function. I just can't get it to work. For example I have a page lets call it index.php and on this page I have a call to a function like this Code: [Select] $scat = 2; // Function to choose which query to use what_Table($scat,$w_query); echo "This is the w query" $w_query; I have an included file called general_functions.php and on that page I have this code Code: [Select] function what_Table($scat,$w_query){ $ctquery = mysql_query("SELECT w_query FROM ad_category WHERE cat_status='1' AND cat_id='$scat'") or die(mysql_error()); $row = mysql_fetch_array($ctquery); // Stands for which query $w_query = $row['w_query']; return $w_query; The echo $w_query does not return a value. Any help would be appreciated! Thanks, Dan Hi there I am making a PHP url shortener using about 4-5 APIs from different websites (to.ly, sn.im, goo.gl, is.dg) and I need to combine them into one PHP script... and also the form lets the user pick which url shortener they want. to.ly: <?php function CompressURL($url) { $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, "http://to.ly/api.php?longurl=".urlencode($url)); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); curl_setopt($ch, CURLOPT_HEADER, 0); $shorturl = curl_exec ($ch); curl_close ($ch); return $shorturl; } echo CompressURL($_POST[url]); // Test ?> sn.im: <?php // REQUIRED FIELDS $sniplink = $_POST[url]; // THE URL TO BE SNIPPED $snipuser = 'alexpja'; // YOUR USER ID REQUIRED $snipapi = ''; // FIND IN YOUR "SETTINGS" PAGE // OPTIONAL FIELDS $snipnick = ''; // MEANINGFUL NICKNAME FOR SNIPURL $sniptitle = ''; // TITLE IF ANY $snippk = ''; // PRIVATE KEY IF ANY $snipowner = ''; // IF THE SNIP OWNER IS SOMEONE ELSE $snipformat = 'simple'; // DEFAULT RESPONSE IS IN XML, SEND "simple" // FOR JUST THE SNIPURL $snipformat_includepk = ""; // SET TO "Y" IF YOU WANT THE PRIVATE KEY // RETURNED IN THE SNIPURL ALONG WITH THE ALIAS //---------------------------------- // NO NEED TO EDIT BEYOND THIS POINT //---------------------------------- $URL = 'http://snipr.com/site/getsnip'; $sniplink = rawurlencode($sniplink); $snipnick = rawurlencode($snipnick); $sniptitle = rawurlencode($sniptitle); // POSTFIELD $postfield = 'sniplink=' . $sniplink . '&' . 'snipnick=' . $snipnick . '&' . 'snipuser=' . $snipuser . '&' . 'snipapi=' . $snipapi . '&' . 'sniptitle=' . $sniptitle . '&' . 'snipowner=' . $snipowner . '&' . 'snipformat='. $snipformat. '&' . 'snippk=' . $snippk ; $ch = curl_init($URL); curl_setopt($ch, CURLOPT_URL, $URL); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $postfield); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $data = curl_exec($ch); curl_close($ch); // THIS IS MERELY FOR DISPLAY IN A BROWSER // TO GET THE RESPONSE DATA, JUST USE $data // echo '<pre>', htmlentities($data), '</pre>'; echo $data; ?> Help?? and should I name the <option> like... <option name="is.dg">? How do i use this function? whats the right way? Code: [Select] <?PHP // validate postcode search function is_valid_uk_postcode($strSearch) { $pattern = "/^([A-PR-UWYZ0-9][A-HK-Y0-9][AEHMNPRTVXY0-9]?[ABEHMNPRVWXY0-9]? {1,2}[0-9][ABD-HJLN-UW-Z]{2}|GIR 0AA)$/"; if (preg_match($pattern, $strSearch)) { return TRUE; } $this->validation->set_message('is_valid_uk_postcode', 'That is not a valid %s.'); return FALSE; } ?> wow, this was the first website EVER that required a Google search in order to register. Anyways... What reason does now() function not work in MySql 5 and how can I get it to work? Most sources online will say you can set now() as default for a datetime field, but that's incorrect, you can't. Also, I've tried inserting it through php, which also didn't work. mysql_query("INSERT INTO table_name(field1, field2, whens) VALUES('$value1','$value2','now()')"); mind you, in this sql query, field1, and field2 ARE properly inserting, so it's not an issue with connecting to the database or inserting in general. The values are passed from a form. I have tried also passing the now() function through the form, that also didn't work. Would appreciate some help. Thank You. |
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