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PHP - Arrays: Concatenation Operator .= Vs =
Is there a subtle difference between Thank you. Similar TutorialsI can successfully concatenate strings and vars to assemble a php var using an echo statement like this: Code: [Select] echo "<input type='radio' id='radio_btn_" . $Row['question_number'] . "_0' name='question[question_" . $Row['question_number'] . "]' value='0' checked='checked' />"; However, when attempting to reference the same var in an IF statement, I can't seem to get the syntax right. I know this syntax is wrong, but I list it for reference to describe the issue I am trying to solve. Code: [Select] if ($_POST['radio_btn_' . $Row['question_number'] . '_0'] == '0'){ I also tried curly braces but can't arrive at a solution. Any advise would be appreciated. I'm having trouble understanding the behavior of Prefix decrementing operator VS. Postfix decrementing Operator Postfix decrementing Operator Code: [Select] <?php $a = 1; $a = --$a + 1; echo $a; // this outputs 1 ?> VS.... Prefix decrementing operator Code: [Select] <?php $a = 1; $a = $a-- + 1; echo $a; // this outputs 2 ?> How do I add a space in my concatenation? What I have down below doesn't work. $result[0] .$result[1] I have a table (applicants) which has a number of fields including 5 for potential 'parties' - these are party1, party2, party3, party4 and party5. Any particular applicant will always have two parties but could have any number up to 5. I need to export a pdf (which I can do) but I need it to include data drawn from the applicants table in the format: party1, party2 and party3 OR party1 and party2 etc that is, each party has a comma after it except the last but one, which has no comma but an 'and'. (I hope this is clear enough!) I can't work out how to do this for a varying number of 'parties'. Any suggestions/answers gratefully received. I am currently learning Zend/PHP on the fly. I've gone from 0 to 40 in about 2 months, as far as savviness is concerned. I am working on a form that I want to display array information of two things (shortname and fullname) in a drop-down list. I am thinking I need to do some sort of concatenation to achieve this, or would I do an array within an array? The array is defined in a value object and that draws the id, shortname and fullname. Shortname is the defined label in that file. In the form page, i have the LO ['full_name'] => LO ['label']... this inputs the right information into the database, but shows the full name. I want the drop-down to show it as following: Shortname|Fullname. This will be used in a couple of places once I get on the right track on how to accomplish this. I would be accepting of any help, as well as any resourced that could answer my question and help me finish this form. Cheers, ESK problem is when i select unpaid in drop down box it not show the expected result. I dont know wats wrong here I doubt $reg .=" AND status=0 "; find wats wrong Thanks a lot Code: [Select] <?php include("connection.php"); $reg=""; if(isset($_POST['filter'])) { if($_POST['sel'] == "0") { $reg .=" AND status=0 "; } elseif($_POST['sel'] == "1") { $reg .=" AND status=1 "; } elseif($_POST['sel'] == "3") { $reg .=" AND (status=0 OR status=1) "; // echo "<a href='vudetails.php?regno=".$qry2['reg_no']."'>".$qry2['name']."</a>"; } $filter=mysql_query("SELECT * FROM stu_details WHERE dept LIKE '%".$_POST['dept']."%' OR course LIKE '%".$_POST['cors']."%' OR YEAR LIKE '%".$_POST['year']."%' OR room_no LIKE '%".$_POST['dept']."%' OR reg_no LIKE '%".$_POST['dept']."%' OR doj BETWEEN '".$_POST['dept']."' AND '".$_POST['dept']."'".$reg); while($f2=mysql_fetch_array($filter)) { echo "<a href='vudetails.php?regno=".$f2['reg_no']."' >".$f2['name']."</a> <br />"; } } ?> <html><head><title>Filter</title></head> <script type="text/javascript" src="datetimepicker.js"> </script> <script type="text/javascript"> function validate() { var a=document.forms['form']['dept'].value; if (a==null || a=="") { alert("Please enter a search."); return false; } /*else { return true; }*/ } </script> <form name="form" action="" method="post"> <table border="0"> <tr><td> <select name="sel"> <option value="3">All </option> <option value="0">Unpaid </option> <option value="1">Paid </option> </select> <tr><td> Department: <input type="text" name="dept"> <tr><td> Course: <input type="text" name="cors"> <tr><td> Year: <input type="text" name="year"> <tr><td> Room No: <input type="text" name="roomno"> <tr><td> Register No: <input type="text" name="regno"> <tr><td> Date of Join: <input type="text" name="doj" id="from"> <a href="javascript:NewCal('from','ddmmyyyy')"> <img src="cal.gif" width="16" height="16" border="0" alt="Pick a date"></a> To: <input type="text" name="datto" id="todat"> <!--<tr><td>Date: <input text="text" id="dp" name="dp" size="25">--> <a href="javascript:NewCal('todat','ddmmyyyy')"> <img src="cal.gif" width="16" height="16" border="0" alt="Pick a date"></a> <tr><td> <!--<input type="submit" name="filter" value="Filter" onclick="return validate()">--> <input type="submit" name="filter" value="Filter" onclick="validate()"> </table> </form> </html> I am using the code posted here to do something with a third party software
http://www.interwork...trusted-tickets
however its utterly frutrating that something as simple as
$fullUrl = "http://{$server}/trusted/{$ticket}/{$url}";
returns me the following
moOaH6BAKFMGGszd_IQHTvpAhttp://<server>/trusted/1/views/<dashboard>?format=png
instead of
http://<server>/trusted/moOaH6BAKFMGGszd_IQHTvpA/views/<dashboard>?format=png
completely beats me. Any idea why ? Is it something to do with the variable $ticket which has the value of moOaH6BAKFMGGszd_IQHTvpA in this case ?
i want to do it with cURL-Multi since this is the most pretty way to do it! Well i am not sure bout the string concatenation. How to do it - Note i want to fetch several hundred pages: see the some details for this target-server sites - /(i have to create a loop over several hundred sites) siteone_dot_com?show_subsite=9009 siteone_dot_com?show_subsite=9742 siteone_dot_com?show_subsite=9871 and so on and so fort how to appy this loop into the array of the curl-multi <?php /************************************\ * Multi interface in PHP with curl * * Requires PHP 5.0, Apache 2.0 and * * Curl * ************************************* * Writen By Cyborg 19671897 * * Bugfixed by Jeremy Ellman * \***********************************/ $urls = array( "siteone", "sitetwo ", "sitethree" ); $mh = curl_multi_init(); foreach ($urls as $i => $url) { $conn[$i]=curl_init($url); curl_setopt($conn[$i],CURLOPT_RETURNTRANSFER,1);//return data as string curl_setopt($conn[$i],CURLOPT_FOLLOWLOCATION,1);//follow redirects curl_setopt($conn[$i],CURLOPT_MAXREDIRS,2);//maximum redirects curl_setopt($conn[$i],CURLOPT_CONNECTTIMEOUT,10);//timeout curl_multi_add_handle ($mh,$conn[$i]); } do { $n=curl_multi_exec($mh,$active); } while ($active); foreach ($urls as $i => $url) { $res[$i]=curl_multi_getcontent($conn[$i]); curl_multi_remove_handle($mh,$conn[$i]); curl_close($conn[$i]); } curl_multi_close($mh); print_r($res); ?> I am trying to figure out how to have an if statement in the middle of strings I am trying to concatenate. I have a from that has a address1 and address2, where address2 often does not exist. So I want to only add that line if there is actually content. I was trying something like the following, but that is giving me an error. I am pretty new to php, so I can't seem figure it out. Any help would be greatly appreciated. Code: [Select] "<p><strong>Address 1: </strong><br>" . $address1 . "<br>" if ( isset($address2) ) { echo . $address2 . "<br>" } . $city . ", " . $state . " " . $zip . "</p>" I'm wondering if this is at all possible:- Code: [Select] $i = 7; $row_item['comment$i_name'] = "john"; with the $i in $row_item['item$i_id'] being replaced with whatever $i is set as sort of like this:- $row_item['comment.'$i'._name'] Is this sort of concatenation possible inside array element names as I can't seem to get it to work? Hello dear folks i am currently workin on a little parser with cURL - and i have some questions he How to do the String concatenation with PHP ; note i wanna do it with curl! the target URL: http://www.schulministerium.nrw.de/BP/SchuleSuchen?action=572.8745475728288 click all checkbuttons Results: approx 6400 results Here i can provide some "more help for getting the target!" - btw see three detail page: http://www.schulministerium.nrw.de/BP/SchuleSuchen?action=261.2855969084779&SchulAdresseMapDO=116191 http://www.schulministerium.nrw.de/BP/SchuleSuchen?action=261.2855969084779&SchulAdresseMapDO=116270 http://www.schulministerium.nrw.de/BP/SchuleSuchen?action=261.2855969084779&SchulAdresseMapDO=188268 btw: we can loop over the results - with a iteration - especially i wanna know: how to do the String concatenation with PHP ; note i wanna do it with curl! function get_page_data($url) { $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $output = curl_exec($ch); if($output!=false && $_POST['dt']=='No') return $output; curl_close($ch); } for($i=1;$i<=$match[1];$i++) { $url = "http://www.example.com/page?page={$i}"; $data = get_page_data($url); if($data) { $cleaned = string_between('onload="check();">', '</body>', $data); return = stip_tags($cleaned, '<table><tr><td><div>'); } } any and all help will be greatly appreciated love to hear from you best regards Hi - good evening! thanks for the answer and all the help so far Oncemore the "Fetching-part" for a little parser-script: Here we go - new target urls: see the overview: http://dms-schule.bildung.hessen.de/index.html http://dms-schule.bildung.hessen.de/suchen/suche_schul_db.html Search by pressing the button "type" and then choose all schools with the mouse! Results 2400 schools: Here i can provide some "more help for getting the target!" - btw: see some details for this target-server: http://dms-schule.bildung.hessen.de/suchen/suche_schul_db.html?show_school=9009 http://dms-schule.bildung.hessen.de/suchen/suche_schul_db.html?show_school=9742 http://dms-schule.bildung.hessen.de/suchen/suche_schul_db.html?show_school=9871 well - you see i have to iterate over the sites - with a function /(a loop) http://dms-schule.bildung.hessen.de/suchen/suche_schul_db.html?show_school=1000 to 10000 BTW - after fetching the page i have to see which one are empty - those ones do not need to be parsed! Well - i want to do this with curl-multi since this is the most advanced way to do this: I see i have an array that can be filled I have to try it out...!! Well, I'm not pretty sure - but judging by the low level of PHP i have: I think that i may need a double array to define the URLs like: Can i do like so?: $urls = array( "siteone" => "suche_schul_db.html?show_school=%i", "sitetwo" => "suche_schul_db.html?show_school=%i", "sitethree" =>"suche_schul_db.html?show_school=%i" ); $params = array ( for ($i = 1; $i <= 10000; $i++) { // body of loop } // well i have to define the variables in a open form like abvove nand not below: // better than doing it like so: "siteone" => array(9009, 9742, 9871), ); then pass them to curl-multi as: foreach ($urls as $id => $url) { foreach ($params[$id] as => $param) { $i = $id . $param; $finalurl = sprintf($url, $param); $conn[$i] = curl_init($finalurl); I don't know if that's fits the needs tip that i am looking for but I hope so ;-) Can i do like so [see above]? What do yu think. i send you many greetings martin I've been looking through the Joomla docs trying to understand how everything works and I've seen something that I don't understand and cannot find an answer to anywhere on the net. The basic question is what is the ampersand used for in this conditional he if (!($mask & 1) && is_string($var)) { The two in the middle are obviously the AND part of the conditional. I know it can be used for creating references to variables but I don't think this is what is happening here. I've seen people using it to test for odd and even numbers too but with no explanation of how it works/what it does. The full code is below: function _cleanVar($var, $mask = 0, $type=null) { // Static input filters for specific settings static $noHtmlFilter = null; static $safeHtmlFilter = null; // If the no trim flag is not set, trim the variable if (!($mask & 1) && is_string($var)) { $var = trim($var); } // Now we handle input filtering if ($mask & 2) { // If the allow raw flag is set, do not modify the variable $var = $var; } elseif ($mask & 4) { // If the allow html flag is set, apply a safe html filter to the variable if (is_null($safeHtmlFilter)) { $safeHtmlFilter = & JFilterInput::getInstance(null, null, 1, 1); } $var = $safeHtmlFilter->clean($var, $type); } else { // Since no allow flags were set, we will apply the most strict filter to the variable if (is_null($noHtmlFilter)) { $noHtmlFilter = & JFilterInput::getInstance(/* $tags, $attr, $tag_method, $attr_method, $xss_auto */); } $var = $noHtmlFilter->clean($var, $type); } return $var; } Hi Ok, so I pick a random value 23 for example and I want this value to be in between two other values. E.g. if 23 is in between 20 and 30, then continue otherwise die. How can I do this? Hi, This ones stumped me a little as i've done this previously and it seemed to work fine: I have a form to add with two password boxes, the IDs are different as they should be but the type is the same: Code: [Select] <form action="<?php echo $PHP_SELF;?>" method="post"> <p>New Password: <input type="password" id="newpassword" name="newpassword" /></p><br /> <p>Confirm Password: <input type="password" id="confirmpassword" name="confirmpassword" /></p><br /> <p><input type="submit" name="submit" value="submit"></p> </form> I have this code to check if they are both equal then md5 them and add them to the database: Code: [Select] // Check if button name "submit" is active, do this if(isset($_POST['submit'])) { //variable to identify user $email = ($_SESSION['email']); //post variable from form $newpassword = $_POST['newpassword']; $password = $_POST['confirmpassword']; //if passwords are not equal if($password != $confirmpassword) { echo "The passwords do not match<br />"; //debugging - to see if they are equal or not - remove afterwards echo $password . "<br />"; echo $newpassword . "<br />"; } //if passwords are equal if($newpassword == $password) { //use md5 so they match when logging in $password = md5($password); $newpassword = md5($newpassword); $sql= "UPDATE users SET password='$newpassword' WHERE username='$email'"; $result = mysql_query($sql); if($result) { echo "Congratulations You have successfully changed your password"; } } } I've tried to explain my thinking as best i can in the code, the debugging part at the top shows that both values seem to be identical yet i'm being thrown into the not equal loop and they aren't adding to the database. Can anyone explain what i'm doing wrong here? I imagine its only minor but its thrown me. Cheers Hi I'm trying to work why the following paramter doesnt work properly. it seems to be ignoring the 'and' part of the query i am using a mysql 5.1.41 server $stmt = $mysqli ->prepare("select CandidateVotes,CandidateTitle, CandidatefirstName ,CandidateLastName,CandidateID from Candidate where ( CandidateFirstName like ? and CandidateLastName like ?) order by CandidateVotes DESC LIMIT 0,?"); $stmt->bind_param('sss', $code1,$code2,$noVotes); $code1="%".$searchFirstName."%"; $code2="%".$searchLastName."%"; $stmt->execute(); $stmt->bind_result($candidateVotes,$candidateTitle,$candidateFirstName,$candidateLastName,$candidateID); I see a couple people using the ? operator in php and was curious as to how it works? $a === $b if $a is equal to $b, and of the same type when would you ever need to use this operator? I mean if its not == then its going to be false so why even test if its the same type. and if it is == then in theory it has to be the same type so why test it? Am i completely over looking something? This might is a newbie/stupid question. But, what does this operator below means? -> I just started my journey into OOP, just looking for a simple explanation as to why the script echo's nothing. (last line) Code: (php) [Select] <?php class Dog { public $name; public function bark() { echo "{$this->name} says Woof!"; } } class Poodle extends Dog { public function bark() { echo "Yip"; } } $furball = new Poodle; $furball->name = "furball"; $furball->Dog::bark(); ?> |
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