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• php: simplexml exception retry

  - by exceptionhandlingnoob

  I am querying an API using SimpleXML which will occasionally fail for reasons unknown. I would like to have the script retry up to 5 times. How can I do this? I assume it has something to do with wrapping the object in a try/catch, but I'm not very experienced with this -- have tried to read the manual on exception handling but am still at a loss. Thanks for any help :) // set up xml handler $xmlstr = file_get_contents($request); $xml = new SimpleXMLElement($xmlstr); Here is the error message I am receiving: [function.file-get-contents]: failed to open stream: HTTP request failed!

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• PHP/XPath: Iterating through ancestor nodes in XML using SimpleXML

  - by StackOverflowNewbie

  I need to loop through the Ancestors nodes in order to get corresponding BrowseNodeId and Name values. How do I do this using XPath? I'm trying something like the the following, but it's not working: //BrowseNode[1]//Ancestors[1]/BrowseNode/BrowseNodeId/text() //BrowseNode[1]//Ancestors[1]/BrowseNode/Name/text() I think the //Ancestors part of the XPath is actually searching the entire XML tree. What I need to do is visit each node to get the needed values. How do I do this? In the example below, I want: Europe - History - Subjects - Books. Example XML: <BrowseNode> <BrowseNodeId>4952</BrowseNodeId> <Name>France</Name> <Ancestors> <BrowseNode> <BrowseNodeId>4935</BrowseNodeId> <Name>Europe</Name> <Ancestors> <BrowseNode> <BrowseNodeId>9</BrowseNodeId> <Name>History</Name> <Ancestors> <BrowseNode> <BrowseNodeId>1000</BrowseNodeId> <Name>Subjects</Name> <IsCategoryRoot>1</IsCategoryRoot> <Ancestors> <BrowseNode> <BrowseNodeId>283155</BrowseNodeId> <Name>Books</Name> </BrowseNode> </Ancestors> </BrowseNode> </Ancestors> </BrowseNode> </Ancestors> </BrowseNode> </Ancestors> </BrowseNode>

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• Writing a PHP web crawler using cron

  - by Horse

  Hi all I have written myself a web crawler using simplehtmldom, and have got the crawl process working quite nicely. It crawls the start page, adds all links into a database table, sets a session pointer, and meta refreshes the page to carry onto the next page. That keeps going until it runs out of links That works fine however obviously the crawl time for larger websites is pretty tedious. I wanted to be able to speed things up a bit though, and possibly make it a cron job. Any ideas on making it as quick and efficient as possible other than setting the memory limit / execution time higher?

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• PHP exec() not executing batch files

  - by Andreas Bonini

  I tried googling for this issue and found many people with the same problem but no solution. $result = exec("C:\\Ruby191\\bin\\lessc.bat less\\$file", $output); Here result is an empty string and output an empty array. Same thing with: $result = exec("cmd /c C:\\Ruby191\\bin\\lessc.bat less\\$file", $output); I am sure the path is correct; I am sure exec() is enabled. I tried exec, shell_exec, system and none work. lessc is less CSS.

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• PHP MySQLi isn't letting me alter a table (adding a new column)

  - by asdasd

  Well thats pretty much it. This is my query: $query = 'ALTER TABLE permissions ADD '.$name.' INT NOT NULL DEFAULT \'0\''; Where $name is already checked to exist with only lower case alpha letters, and not more than 20 length. Im just starting this out with very simple names. The next 4 lines of code after that one are: if($stmt = $db -> prepare($query)) { $success = $stmt -> execute(); $stmt -> close(); if(!$success) echo 'ERROR: Unsuccessful query: ',$db->error,PHP_EOL; } And I get back, every time ERROR: Unsuccessful query: And no error message. Is there a way to get more error messages so I can see what is failing? I can add new columns through phpmyadmin, but that really doesnt help me at all. The $db is fine, i do lots of stuff before and after this one section. It is only adding new column to the table that fails. side question: prepare() rejected my query every time when i tried to make those 2 variables, the $name and the 0 value as ? ? prepared statement values. Thats why they are in the real query and not bound later. If i could change that too I would like that.

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• Exploding a String In PHP

  - by streetparade

  How do i explode this string '||25||34||73||94||116||128' i need to have a array like this array ( 0 => '25', 1 => '34', 2 => '73', 3 => '94', 4 => '116', 5 => '128' ) explode("||", $array); didnt work for me i get this array array ( 0 => '', 1 => '25', 2 => '34', 3 => '73', 4 => '94', 5 => '116', 6 => '128', )

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• Getting key/value pairs from plist-style xml using simplexml in php

  - by Anthony

  Here is an example bit from the xml file: <array> <dict> <key>Name</key> <string>Joe Smith</string> <key>Type</key> <string>Profile</string> <key>Role</key> <string>User</string> <key>Some Number</key> <integer>1</integer> <key>Some Boolean</key> <true/> </dict> </array> I have two separate goals. The first is to extract an array from the dictnode that would look like: [Name] => Joe Smith [Type] => Profile [Role] => User [Some Number] => 1 [Some Boolean] => true It's not crucial that the boolean be included, so if that adds too much complexity, I'd rather just know how to deal with the others for now. The second goal is to be able to select the value node (<string>, <integer>,etc) so that I can change the value. I would need to select it based on the text value of the preceding key element. I think the following XPath should work: //key[.=$keyname]/following-sibling[1] But I'm not sure. Basically, this whole system that Apple uses seems logical, but totally contrary to the XML is supposed to work. If I ran the world, the original XML would look more like: <dict type="array"> <value key="Name" type="string">Joe Smith</value> <value key="Type" type="string">Profile</value> <value key="Role type="string">User</value> <value key="Some Number" type="integer">1</value> <value key="Some Boolean" type="boolean">true</value> </dict> But since it is fairly logical, I am wondering if I'm missing some obvious way of handling it.

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• Change array structure in PHP.

  - by Muhammad Sajid

  Refers to my previous question : Show values in TDropDownList in PRADO. ok fine the array i receive from query is an object array like : ContactRecord Object ( [id] => 1 [name] => leo [_recordState:protected] => 1 [_connection:protected] => [_invalidFinderResult:protected] => [_e:TComponent:private] => Array ( ) ) ContactRecord Object ( [id] => 2 [name] => ganda [_recordState:protected] => 1 [_connection:protected] => [_invalidFinderResult:protected] => [_e:TComponent:private] => Array ( ) ) If I convert it in to array like: Array ( [key 1] => leo [key 2] => ganda ) then I can populate values into TDropDownList. Now can anyone help me to convert array structure which I need ... ? Again thanks

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• Incrmenting a Cookies with PHP (Beginner Question)

  - by BandonRandon

  Hello, I have used sessions before but never cookies. I would like to use cookies for two reasons: 1) it's something new to learn 2) I would like to have the cookie expire in an hour or so (i know in the code example it expires in 40 sec) I am trying to write a basic if statement that if($counter=="1") { //do this second } elseif ($counter >="2") { //do this every time after the first and second } else {// this is the first action as counter is zero } Here is the code I'm using to set the cookie: // if cookie doesnt exsist, set the default if(!isset($_COOKIE["counter_cookie"])) { $counter = setcookie("counter_cookie", 0 ,time()+40); } // increment it $counter++; // save it setcookie("counter_cookie", $counter,time()+40); $counter = $_COOKIE["counter_cookie"]; The problem is that the counter will be set from 0 to 1 but won't be set from 1 to 2 and so on. Any help would be great I know this is a really simple stupid question :| Thanks!

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• Calculate actual time from different timezones in php

  - by Thinker

  Hai, I would like to calculate actual time from different timezones. I have two mysql tables 1.Timezone table: This table contians two fields (offset value, country name) values are ( -12:00, Eniwetok, Kwajalein) (-11:00, Midway Island, Samoa).... so on 2.My employee table This table contains the employees details with two field names (created_on, timezone) and the values are (current timestamp, -11:00) (current timestamp, -12:00)..... so on Now, If my employee logged in to my system, i want to display the time according to their timezones values from tables. Basically if my Current timestamp is :2010-05-10 15:41:39 offset values is: +5:30 my result should be : 10 May 2010 3:41pm the same for different offset values for the same current timestamp. I believe i explained the issue correctly, if you want any information, please ask me.

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• Split string into smaller part with constrain [PHP RegEx HTML]

  - by Sadi

  Hello, I need to split long string into a array with following constrains: Each part will have a limited number of character (e.g. not more than 8000 character) Each part can contain multiple sentences (delimited by . [full stop]) but never a partial sentences. Except if the last part of the string (as last part may not have any full stop. The string may contain HTML tags. But the tag can not be divided as ( to ). That means HTML tag should be intact. But starting tag and ending tag can be stay on different segment/chunk. I think regular expression with preg_split can do it. Would please help me with the proper RegEx. Thank you Sadi

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• Creating a small encrypted string in PHP

  - by JustJon

  I am looking to create a small encrypted string, like the referral strings used by Twitpic or bit.ly, for a website I am working on for referral purposes. Any of the built-in functions like MD5 and mcrypt each make strings that are too long for my purposes. Is there an easy way to create a string like this? Thanks.

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• PHP GET number query

  - by Jordan

  Hi to all! I have a query that gets the name and an id. The results is like this : 54 - Rian Ree Barrientos I wanted to get the number 54. I used echo (int)$_GET['number']; But the result is "0". How can I get the number?

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• Problem with Xpath PHP

  - by user294597

  Im tring to access some links through Google using xpath. The below does works fine and all the links are shown. $query = $xpath->evaluate("/html/body//a"); for ($x=0 ; $x < $query -> length; $x++) { $href=$query->item($x); $url=$href->getAttribute('href'); echo $url."<br>"; } But when i try the below xpath nothing is shown..Im sure that the xpath is correct coz its evaluated and the result is shown in xpather.. /html/body[@id='gsr']/div[@id='cnt']/div[@id='res']/div[1]/ol/li/div//cite for ($x=0 ; $x < $query -> length; $x++) { $href=$query->item($x); $url=$href->getAttribute('cite'); echo $url."<br>"; } can some one please tell me what i am doin wrong? any help will be much appreciated

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• PHP array pointer craziness

  - by JMan

  I'm trying to create a "GetCurrentLevel" method that takes a point value as an input and returns what "Level" that corresponds to. I'm storing the Level = Points mapping in an array, but the array pointer is not moving logically when I use it a foreach loop. I've added echo statements for debugging. Here's my class definition: class Levels extends Model { protected $_map = array ( 'None' => 0, 'Bronze' => 50, 'Silver' => 200, 'Gold' => 500 ); public function __construct() { parent::__construct(); } public function GetCurrentLevel($points) { foreach ($this->_map as $name => $threshold) { echo "Level Name: $name<br/>"; echo "Level Threshold: $threshold<br/>"; echo "Current Level: " . key($this->_map) . "<br/>"; echo "Current Threshold: " . current($this->_map) . "<br/>"; if ($points < $threshold) /* Threshold is now above the points, so need to go back one level */ { $previousThreshold = prev($this->_map); echo "Previous Threshold: $previousThreshold<br/>"; echo "Final Level: " . key($this->_map) . "<br/>"; return key($this->_map); } echo "Go to next level <br/>"; } } And here is what I see when I call GetCurrentLevel(60): Level Name: None Level Threshold: 0 Current Level: Bronze //* Looks like foreach immediately moves the array pointer *// Current Threshold: 50 Go to next level Level Name: Bronze Level Threshold: 50 Current Level: Bronze //* WTF? Why hasn't the array pointer moved? *// Current Threshold: 50 Go to next level Level Name: Silver Level Threshold: 200 Current Level: Bronze //* WTF? Why hasn't the array pointer moved? *// Current Threshold: 50 Previous Threshold: 0 Final Level: None But the "Final Level" should be 'Bronze' since 60 points is above the 50 points needed for a Bronze medal, but below the 200 points needed for a Silver medal. Sorry for the long post. Thanks for your help!

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• php open_socket

  - by sea_1987

  Hello, I am trying to open a socket to use with secure tradings xpay api, however when I check to see if the socket is open I get error returned, Can't assign requested address I need to open up 127.0.0.1:5000 is there something wring with my code that means I cannot do this? if (isset($xpay_port) and ($socket=socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) and (socket_connect($socket, $address, $port))) { $text="Connection successful on IP $address, port $port"; socket_close($socket); } else $text="Unable to connect<pre>".socket_strerror(socket_last_error())."</pre>"; echo "<html><head></head><body>". $text. "</body></html>";

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• How to force adodb php library to use lowercase field names

  - by spam

  I'm trying to use adodb for db access in my webapp. However my hosting provider has mysql case sensitive, and I have all my fields in lowercase. But when I call getInsertSQL function, I got them in uppercase. Is there a way to force adodb to use lowercase? I tried with define('ADODB_ASSOC_CASE', 0); $ADODB_ASSOC_CASE = 0; But it seems to be ignored as the constant is suppose to be used only with oracle, MSSQL and other DBMS $conn = &ADONewConnection($this->DbType); $conn = PConnect($dbServer,$dbUser, $dbPassword,$database); $tableName = "sample"; $insertSQL = $conn->GetInsertSQL($tableName,$objDB); And I got the SQL statement with the column names in uppercase.

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• Get only new RSS entries with PHP Script ?

  - by ArneRie

  What im trying to do: Fetch X numbers of RSS Feeds from my Blogs and echo only new entries. My Problem is, how to know wich items are already parsed? Solution so far: Fetch the Feed every 5 hours, store all titles inside an Database table or flat file. Next run check if the title is already in database if not print it and save it inside the database. But iam not sure if this is best practise to do this? If someone knows a fast way, it would be great. Sorry for my poor english.

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• PHP Apostrophe and query string.

  - by cmaduro

  I want to supply a SQL statement from the query string, but all my efforts result in escaped single quotes and slashes.

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• how to handle exceptions/errors in php?

  - by fayer

  when using 3rd part libraries they tend to throw exceptions to the browser and hence kill the script. eg. if im using doctrine and insert a duplicate record to the database it will throw an exception. i wonder, what is best practice for handling these exceptions. should i always do a try...catch? but doesn't that mean that i will have try...catch all over the script and for every single function/class i use? Or is it just for debugging? i don't quite get the picture. Cause if a record already exists in a database, i want to tell the user "Record already exists". And if i code a library or a function, should i always use "throw new Expcetion($message, $code)" when i want to create an error? Please shed a light on how one should create/handle exceptions/errors. Thanks

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• Adding "selected" into option from matching variable. PHP

  - by Dolan

  I have $country which stores the 2 letter country code of a user. US for example. <select id="countries"> <option value="US">United States</option> <option value="EN">England</option> <option value="AU">Australia</option> <option value="CA">Canada</option> etc. </select> What's the best practice to add "selected" to the option of the users country code? I'm against adding a million if's. Also note, the countries are harcoded in HTML, so no array. :(

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• Use of date function in PHP to output a user-friendly date

  - by Jamie

  I have a MySQL database column named DateAdded. I'd like to echo this as a readable date/time. Here is a simplified version of the code I currently have: $result = mysql_query(" SELECT ListItem, DateAdded FROM lists WHERE UserID = '" . $currentid . "' "); while($row = mysql_fetch_array($result)) { // Make the date look nicer $dateadded = date('d-m-Y',$row['DateAdded']); echo $row['ListItem'] . ","; echo $dateadded; echo "<br />"; } Is the use of the date function the best way to output a user-friendly date? Thanks for taking a look,

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• PHP How to access constant defined outside class?

  - by Ashley Ward

  I have defined some constants eg: define('DB_HOSTNAME', 'localhost', true); define('DB_USERNAME', 'root', true); define('DB_PASSWORD', 'root', true); define('DB_DATABASE', 'authtest', true); now when I try to do this: class Auth{ function AuthClass() { $this->db_link = mysql_connect(DB_HOSTNAME, DB_USERNAME, DB_PASSWORD) or die(mysql_error()); } } I get an error. Why is this and what do I need to do? See, I've tried using (for example) global DB_HOSTNAME but this fails with an error.

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• PHP Function to split a combined CSS attribute/value to several attributes

  - by Sandman

  Basically, I want this: h2 { font: bold 36px/2em "Times New Roman" } To this: h2 { font-size: 36px; font-weight: bold; line-height: 2em; font-family: "Times New Roman" } And other variations, of course. Does anyone know of a function that does this so I don't have to code it myself? :)

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• PHP PDO fetch null

  - by Jacob

  How do you check if a columns value is null? Example code: $db = DBCxn::getCxn(); $sql = "SELECT exercise_id, author_id, submission, result, submission_time, total_rating_votes, total_rating_values FROM submissions LEFT OUTER JOIN submission_ratings ON submissions.exercise_id=submission_ratings.exercise_id WHERE id=:id"; $st = $db->prepare($sql); $st->bindParam(":id", $this->id, PDO::PARAM_INT); $st->execute(); $row = $st->fetch(); if($this->total_rating_votes == null) // this doesn't seem to work even though there is no record in submission_ratings???? { ... }

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