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PHP - Is_numeric Question
Taken from http://php.net/manual/en/function.is-numeric.php
<?php $tests = array( "42", 1337, "1e4", "not numeric", Array(), 9.1 ); foreach ($tests as $element) { if (is_numeric($element)) { echo "'{$element}' is numeric", PHP_EOL; } else { echo "'{$element}' is NOT numeric", PHP_EOL; } } ?> Outputs: Quote '42' is numeric '1337' is numeric '1e4' is numeric 'not numeric' is NOT numeric 'Array' is NOT numeric '9.1' is numeric WHY does 1e4 validate as TRUE using is_numeric? Similar TutorialsI have a link echo '<p>View All Items listed for <a href="item.php?mem-items='.$mem_id.'">"'.$name.'"</a></p>'; That goes to a file http://localhost/folder/item.php?mem-items=26 with 26 being an actual member id number I use the GET function like this if (isset($_GET['mem-items']) && is_numeric($_GET['$mem-items'])) { $mem_items = $_GET['mem-items']; } My problem is $mem_items isn't assigned a variable, but when I take the "is_numeric($_GET['$mem-items'])" out, it works like a charm. I use this same format on the same file for "if (isset($_GET['item']) && is_numeric($_GET['item']))" AND it works great. Can anyone see what's wrong. Thanks Code: [Select] <FORM METHOD=POST ACTION=""> <p>Breeder or Business Name<br /> <input type = "text" name = "breedername" size= "25" maxlength = "50" /> </p> <p>Breeder Telephone<br /> <input type = "text" name = "breedertelephone" size= "25" maxlength = "50" /> </p> <p>Breeder Location<br /> <input type = "text" name = "breederlocation" size= "25" maxlength = "50" /> </p> <p>Breeder Desription<br /> <input type = "text" name = "breederdescription" size= "25" maxlength = "50" /> </p> <p>Leave blank<br /> <input type = "text" name = "breederverify" size= "5" maxlength = "5" /><br /><br /> </p> <input type="submit" value="Submit" name='submit' /> <br /> <br /> </form> <?php if (is_string($breederverify)) { <-- If $breederverify is set , then echo "Please leave the lowest box empty!" echo "Please leave the lowest box empty!"; } else { <-- else if $breederverify is unsigned/null execute this block. $con = mysql_connect("localhost","xxxxxxxxxx","xxxxxxxxxx"); mysql_select_db("cichlid",$con); $breedername = $_POST['breedername']; $breedertelephone = $_POST['breedertelephone']; $breederlocation = $_POST ['breederlocation']; $breederdescription = $_POST ['breederdescription']; $breederverify = $_POST ['breederverify']; $sql = "INSERT INTO breedersinfo SET breederNAME = '$breedername' , breederTELEPHONE = '$breedertelephone' , breederLOCATION = '$breederlocation' , breederDESCRIPTION = '$breederdescription'"; if(!mysql_query($sql,$con)) { die('ERROR:Could not connect ' . mysql_error ()); } echo ""; mysql_close ($con) ; } ?> All i am trying to accomplish is a form field that will only update records if the last $breederverify = $_POST ['breederverify']; is null/unasigned . I was thinking in order to do this i could use is_numeric , or is_string function to check $var ,to see what it's state is. Any help or advice would be appreciated , provided this is even possible. Cheers guys . when in a form, I wish to build a conditional that if the response to a radio button is a value of 2 (female), it will display an input requesting for users maiden name. If not 2 goes to the next input statement. Here is code I was experimenting with: <html> <body> <form action="" name="test" method='POST'> <input type="radio" id="sex" value=1 checked><label>Male</label> <input type="radio" id="sex" value=2><label>Femaleale</label> <?php $result = "value"; if ($result == 2) echo "<input type='int' id='gradYear' size='3' required>"; else echo "Not a female!" ?> <input type="submit" value="GO"> </form> </body> </html> The code passes debug, however, Not a Female is displayed. My question is - Can I do this and if so, what value do I test against id='sex' or value. I tried each one but gave the same results. I realize that $_POST[sex] would be used after the submit button is clicked. But this has me stumped. Thanks for the assis in advance. Hello, i am currently working on a project and i have been on google and nothing has helped i am trying to detect characters in the URL so for example XSS if someone typed in the URL:
home.php?=<script>document.cookie();</script>
OR
home.php?=<?php echo file_get_contents("document.txt", "a");
How would i be able to make a kind of firewall to detect this?
and if it does then redirect to another page.
Thanks.
Hi to all people, I just want to know if there a php script I can use using DRM. The scenario, once the user download the song from a website, he/she can't forward into other using bluetooth or file transfer. It is possible to do that scenario? Thanks in advance U guys know in forums how at the top or bottom there links to the "1 2 3 4 5 next" and stuff? and how it loads a database? how would i do that exactly? or explain to me what it could be called. cause me i have no idea :/ hi, im trying to say if field ARTIST = Eminem then do the following. here is my current code Code: [Select] $hmm = simplexml_load_file('http://localhost/1.0/?method=player.getPlayQueue'); foreach($hmm->tracks->track as $tracks) { $artist = $tracks->artist; $title = $tracks->title; $album = $tracks->album; $index = $tracks->index; $id = $tracks->id; //If we submitted the form if('.$artist.'="eminem") { echo '<table border="0" width="70%" align="center">'; echo '<tr>'; i just need to know how to do the if(***) part. thanks. I am trying to make my database search only search where private = '$priiv'(Usually 0,1, or 2) but it does not work Code: [Select] $query_search = "SELECT * FROM users WHERE username LIKE '%$idea%' OR fname LIKE '%$idea%' OR lname LIKE '%$idea%' OR tags LIKE '%$idea%' AND private = '$priiv'"; What am i doing wrong? Sorry for the really, really basic CSS question. (I'm asking this in the PHP forum, because so far, you've all been nice to me and haven't made fun of some of my really dumb questions.)
Looking at a forum like PHPbb or similar. Wondering if anyone can tell me how the system (or scripts) manages to pull all the user information when viewing a thread without a massive amount of database calls? For example, lets say 1 thread has 10 different users associated to it. When you view the thread, on the left you see the username, their avatar, when the membership was created, maybe even the users level or amount of interaction. So, for each thread view (or page view) does the program do a SQL Select back to the user database for each user's information or is the users information being pulled from cache somewhere? Any insight into the logistics is greatly appreciated! i am trying to understand, how a site like ebay can display content and be case insensitive? for example: The original url: http://www.ebay.co.uk/itm/Toshiba-Satellite-C50-AMD-E-Series-1-4GHz-Dual-Core-15-6-Inch-500GB-2GB-Laptop/151458954958the above works fine and go to the intended page. user editing the browser url into lowercase : http://www.ebay.co.uk/itm/toshiba-satellite-c50-amd-e-series-1-4ghz-dual-core-15-6-inch-500gb-2GB-laptop/151458954958random uppercase and lowercase. http://www.ebay.co.uk/itm/toshiba-sateLLite-c50-aMd-e-sERIes-1-4ghz-dual-core-15-6-inch-500gb-2GB-laptop/151458954958both the urls above also work fine and go to the intended page. How can such a thing can work? it is supposed to throw an error such as page not found and the like? any thoughts welcome. hi php people, I am wondering will if the code below will work when I call $C->getafoo() will I get foo; I keep getting an error at this point return $this->A->a(); saying the method is not there Code: [Select] class A{ public function a(){ return "foo"; } } class B { public $A; function __construct($A) { $this->A = $A; } public function geta(){ return $this->A->a(); } } class C extends B{ public function getafoo(){ return geta(); } } $C = new C(new A()); echo $C->getafoo(); I am trying something simple, creating some horses and making them race using OOP, creating them is easy, how can i find out which one "won" based on the highest total. Here is what i got so far Code: [Select] <?php class Horse { public $strength; public $speed; public $agility; public function create($name,$age,$odds){ $this->name=$name; $this->odds=$odds; $this->strength=(rand(50,200) * $this->odds - $this->age); $this->speed=(rand(100,400) * $this->odds - $this->age); $this->agility=(rand(150,250) * $this->odds - $this->age); $all=array(0=>"$this->strength",1=>"$this->speed",2=>"$this->agility"); echo "<b>$this->name</b> has a strength of <b>$this->strength</b>, a speed of <b>$this->speed</b> and agility at <b>$this->agility</b>. --- <b>".array_sum($all)."</b><br>"; } } $mix=rand(2,6); $a=new Horse; $a->create("Dave", 2, $mix); $a->create("Dude", 3, $mix); $a->create("Evan", 3, $mix); $a->create("Jill", 15, $mix); $a->create("Flex", 10, $mix); ?> I cant figure out a way to find out who had the highest total, i would love to know what i am doing wrong. Major breakthrough. utf8_encode() allows me to view utf-8 characters in the browser. Therefore, my source data file must be ISO-8859-1 encoded text, right? Am I understanding this correctly?
<?php
//mb_internal_encoding("UTF-8");
header('Content-type: text/html; charset=utf-8');
$file = fopen('some_csv_file_created_by_excel.csv', "r");
ob_start();
while (($spec = fgetcsv($file, 100000, ",")) !== FALSE){
echo($spec[0].' '.utf8_encode($spec[0]).'<br>');
}
$string=ob_get_clean();
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>utf</title>
</head>
<body>
<p><?php echo($string);?></p>
</body>
</html>
Edited by NotionCommotion, 11 January 2015 - 08:22 PM. Hello. I'm trying to pull information out of an xml file. However I'm a bit lost in getting the actual value. Code: [Select] $url="http://ws.audioscrobbler.com/2.0/?method=artist.getimages&artist=Dr%20Feelgood&limit=1&autocorrect=1&api_key=c107c9b5c09cb5693b6c19409dd984c1"; $xml = simpleXML_load_file($url,"SimpleXMLElement",LIBXML_NOCDATA); $largesquare=$xml->images->sizes->size[2]; Is what I have but its not pulling the information. The above url will give you the link to a set xml file for this example. And I want to get the info for the Code: [Select] <size name="largesquare" width="126" height="126">http://userserve-ak.last.fm/serve/126s/43173899.jpg</size> I'm sure I'm doing something wrong that's a simple fix but I am lost here. In the sizes there are 6 different size options each with different names and I have no idea how to pull the one with the correct name that I need. Thank you to who ever can help me sort this out. I'm considering getting a VPS, but I'm not entirely sure what this would be able the handle. The specs doesn't look that good to me, but my friend swears it will handle running apache/php/mysql handling large websites and databases without a problem. I want to run multiple databases that just store statistics and I'm a bit worried about the RAM and the company doesn't even mention a cpu. Here's the specs: 256MB RAM 300GB HDD 10Mbps unmetered 1 IP Address My friend runs two counter-strike: source servers off his VPS (same stats).. so I'm actually considering this, but it just seems like it's not powerful enough. Oh.. forgot the most important part.. it's only $9. Hi! I'm new. I'm Gabby. :3 I'm currently self teaching myself php, MySQL, and Ajax for a simulation game I'm opening up where you can breed, show, and train dogs. I've been reading tutorials on how to create a sign up page with a confirmation email being sent to you. However, I don't understand why I need multiple pages. For instance, with the tutorial I learned, you have to create three pages. One to configure and connect your site to the DB, one to display the form to sign up with, and one to display a success/failed message. My issue with that is I know it's possible using php (or is it Ajax?) to have one page. An example is on http://dogdayzz.com, when you sign up the page doesn't redirect you anywhere, it uses the same php file the entire time. Is this because the code for the form is printed in an if statement, then cleared and executed with an error/success prompt? Hopefully someone can help me out.. I couldn't find anything on google. :/ Thanks everyone for your time Gabby Hello, I have a 'strange' situtation. I have this string "Who Am I" that will be used as an header (site for a client) but the design shows that the word "Who" and the words "Am I" are in 2 different colors, in HTML this is a quick fix, but in PHP? What I was thinking was explode the string and fetch the first element put it in a var en then concat the 2 others. But what if the title is more then 3 elements after exploding? It needs to be more dynamic, but I don't know how to do it. Does anyone have an idea? I have been away from PHP for a long time and I was looking over my old scripts. I did PHP OOP at one time and I used a paticular method to connect all my methods up and load them. I have been looking at other peoples code and when I look at my code it does not even feel like OOP, I want to know how to you link all the methods (or is it called functions?) in a class up and return them? I use to do this: Code: [Select] <?php class quickFUNC { function note_pad() { // code for notepad } function quickAdminFunc() { // code for admin func $this->note_pad(); } } $quickFUNC = new quickFUNC; if(isset($_GET['id'])) { $act = $_GET['id']; } else { $act = NULL; } switch ($act) { case 1: //some random code to launch case 1 break; default: $quickFUNC ->quickAdminFunc(); ?> This was my code back in the days, as you can see the notepad was called in the admin function then made the admin function default in the case switch. I looked at all my script and the all are layed out like this :S.. Can I get some help please, thank you. |
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