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PHP - Global Variable Question
Sorry, this will be a simple question. Say you define two global variables in your functions.php file as:
GLOBAL $salesTax = .07; GLOBAL $shipping = 5.00; Those variables would be accessiible in the checkout.php page, right? Similar Tutorialsok iv set up a simple demo this is the code im running include('simple_html_dom.php'); include('config.php'); include('connect.php'); include('functions.php'); include($_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . 'globalFunctions.php'); test(); echo "test variable = ".$test; exit; this is the function which is in globalFunctions.php which is two directories back ../../ function test() { $test = 10; global $test; } how come when i run script i am not getting variable echoed Hi All, For the last post,I m very happy that i found out so many great mind who are watching my problem and solving online. anyway great thanks for all, just now i m making a project and i m facing problem in the below code "i need to know how can make this code easy or how can i make rdata variable accessible for the download button" generatecv.php file <?php if(isset($_REQUEST['submit'])) { $name=$_REQUEST['pname']; $pin=$_REQUEST['pin']; $mnumb=$_REQUEST['mnumber']; $tnumb=$_REQUEST['telenumber']; $email=$_REQUEST['email']; $obj=$_REQUEST['obj']; $title=$_REQUEST['jobt']; $activity=$_REQUEST['activity']; //$file=fopen('test.doc','a+'); //echo @fwrite($file,$name); //fclose($file); $rdata=""; $rdata.="<table id='cvtbl' border='0' align='center' > <th>Resume</th> <tr><td>".$name.":</td></tr><tr><td>Objective:</td></tr>"; $rdata.="<tr><td>".$obj."</td></tr>"; $rdata.="<tr><td>Email:".$email."</td></tr>"; $rdata.="</table>"; echo $rdata; echo "<style>#cv{display:none;}</style>"; echo "<form><input type='submit' name='dwnld' id='dwnld' value='Download'/></form>"; } if(isset($_REQUEST['dwnld'])) { header("Content-type:application/msword"); header("Content-disposition:attachment;filename=test.doc"); $fp=fopen("test.doc","r") or die("try again"); $data=fread($fp,filesize('test.doc')); fwrite($fp,$rdata); echo $data; fclose($fp); //echo $rdata."<br />".$rdata; } ?> this is the html file <html> <title>User details</title> <body> <form name='cv' id='cv' method="post" enctype="multipart/form-data" action='generatecv.php'> Enter your name<input type=text name=pname id=pname /> Zip Code<input type=text name=pin id=pin /> Mobile number<input type=text name=mnumber id=mnumber /> <br />Telephone number <input type=text name=telenumber id=telenumber /> Email address<input type=text name=email id=email /> <br />Enter your objective<br /><textarea name=obj id=obj cols=30 rows=5 ></textarea> <!--University Name <input type=text name=university id=university /> --> <br /><!--uni, city ,state ,type of degree ,full degree name,date--> <br /><!--Experience<br /><textarea name=exp id=exp cols=30 rows=5 ></textarea> --> Select type of resume <select name='type' id='type' onChange=''> <option value='0'>Graduate</option> <option value='1'>Post Graduate</option> <option value='2'>Non Graguate</option> <option value='3'>Other</option> </select> Job title<input type='text' name='jobt' id='jobt' /> <br /><!--company name,city ,state ,office number ,job description ,date of employment--> <br />Activity <input type=text name=activity id=activity size=100 /> <br />Honors/Awards<input type=text name=honor id=honor size=100 /> <input type='submit' name='submit' id='submit' value='Generate CV' /> <input type='reset' name='Reset' id='submit' value='Reset' /> </form> </body> </html> Many thanks in advance Hi, im having a problem using a global object in all my scripts and programs. Its a register singleton so it have all the configuration values, etc... Now im doing: 1-I create a script for testing, test.php 2-I include in that script 'errores.php', thats my error system library. 3-The error library include once 'registroglobal.php', thats my file for the global register. 4-Because i can use a lot of systems with a complete library or alone, i created a system where i test if the library module is part of a more greater library or not. If not, it instantiates the global register in errors.php (called in the include in test.php). 5-Here is the problem. Includes add and execute code, so, i must have all errors.php functions and the global register created. 6-If i test the global register in the test.php script, it goes well. 7-But if i call a function of my errores.php system, it says that my global register is undefined. Well, thats all the explanation. Whats going on? How can i solve this? I run these functions to find the key of a given element inside an array. Like so; $ban_ip_file = file("ip_file.txt"); foreach($ban_ip_file as $key => $value) { $value = trim($value); if($value == $ip_from_form)// passed to page by a form $set = $key; } How do I make $set available for testing and file writing further down the script? Tried assigning global $set; just above the $set=$key; ----but it did not work. I declared a variable in a page. When i want to access that variable in other page i am bound to state as global such as global $var; now i can not access this variable in other pages even if declared global. Please some one tell me how to declare a variable once and can use in any page i want. Hey all, I'm well aware of associative arrays (key/value pairs) and how you can index them in an array like this: $character = array (name=>"John", occupation=>"Programmer", age=>22, "Learned language "=>"PHP" ); Then it makes sense to iterate through the key/value pairs of the array using foreach: foreach ( $character as $key=>$val ){ print "$key = $val<br>"; } However, I was watching a video tutorial where he created a $_SESSION array and then created an array associative array: $_SESSION['cart'] = array(); [/PHP] Then he added a function add_to_cart: function add_to_cart($id){ if(isset($_SESSION['cart'][$id])){ $_SESSION['cart'][$id]++; return true; } else { $_SESSION['cart'][$id] = 1; return true; } return false; } Now that $id variable holds an id converted to integer from the dataabse. So if first item is clicked, id holds a value of integer 1. When I see this: $_SESSION['cart'][$id] I see an array that holds two indexes, each index containing an associative array: [[array() => ''], [1 => '']]. So at index 0 of $_SESSION is [array() => '']. But then he uses the foreach iterator like this: function total_items($cart){ $items = 0; if(is_array($cart)){ foreach($cart as $id => $qty){ $items += $qty; d } } return $items; } Now I'm very confused. As you can see in that foreach method, it says that $id (and its corresponding value) is an associative array of $cart array, not $_SESSION array. I don't see how that happened. I thought $cart and id$ were distinct indexes of $_SESSION. I don't see how $id is a key of the $cart array. Thanks for any explanation to clear my confusion. I'm trying to loop through a database and assign the results to a variable that is created with the loop with the variables name based on which instance is currently running in the loop. I'll go ahead and include the code I thought might work, but I obviously have no idea what I'm doing in this case $i = 0; while ($i < $num_results) { $ip = ($i++); $result = ("$res_" . "$ip"); $loop_date = ("$res_" . "$ip" . "_date"); $get_result = "SELECT * FROM table WHERE id = '$result'"; $que_result = mysql_query($get_display); while ($sub_res = mysql_fetch_array($que_result, MYSQL_BOTH)) { $loop_date = $sub_res['date']; } $i++; } echo $res_1_date; Can anyone please clue me in on how I can get this to work please. It works with $result but it isn't working with the last $res_1_date... As I'm writing this I see where the problem is but just not quite sure how to make it work... Hi, I have a quick question: is it possible to replace a Class name with a variable? I keep getting an error when I try: Area_town::count_all(); becomes: $className = 'Area_town'; $className::count_all(); I want to make the page dynamic, but to do so, I have to have the Class name as a dynamic name. Error: Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /home/p/o/powtest/web/public_html/admin/lib/pagination/paging_town_data.php on line 15 Thanks I have a question on when PHP will allocate space in the code. Does it happen up front, or as the code executes? // some stuff if (some_conditional) { // something happens here and returns or exits } // we never get here $foo = array(); exit(0); In this example, does $foo get created? Hey, <a href="edit.php?id='.$row['id'].'">edit</a> I am learning PHP and I am wondering what I put after my SQL connection info so that I can create a variable $id $id = <what goes here> How do I make $id to store the unique number in this variable.. For example edit.php?id=100 how does it store this number...thanks... are all of the following same, or some same or all different: $variable="" $variable=0 $variable=NULL and which of the above will satisfy if(empty($variable)) { blah!; } $to = $notifyemail; $from = "xxx@xxx.com"; $subject = "[ $rawticket ] Random $notifytype Notification"; Currently the output is an email with a total of 15 numbers, i.e. SUBJECT: [ 000000001718989 ] Random $notifytype Notification I want to remove the 0's Would something like this work or is this not possible? "[ (substr($rawticket,9)) ] Random $notifytype Notification"; The org variable holds the value of the folder name. The problem is that the header is sending out ".$org." and not the actual value of $org. Example output url: http://127.0.0.1/application/".$org."/display/trackingboard.php I want this url if the value is test: http://127.0.0.1/application/test/display/trackingboard.php Thanks! Code: [Select] $org = "test"; header('Location: ../application/".$org."/display/trackingboard.php'); I'm having a complete brainfart right now and can't seem to remember this. Tried looking it up in the manual, but couldn't find an example. Here's what I have: class myclass { function testA { } function testB { } } So that's my basic setup. I want to define a variable. I then want to set it's value in testA(). I then want to be able to access the value in testB(). Where and how do I define this variable? I thought all I had to do was something like: class myclass { public $tempvar=''; function testA { $tempvar="my new value"; } function testB { echo $tempvar; } } But this says that $tempvar is equal to NULL. What am I forgetting? Thanks in advance! Hi - I know this is a #101 question but here goes! I simply want to select a single row from a table and use the columns fields as variables that can then be posted in a form. $result = mysql_query("SELECT * from tblquestions WHERE qid='1'"); if (!$result) { echo 'Could not run query: ' . mysql_error(); exit; } $row = mysql_fetch_row($result); $oid=$result['oid']; $qid=$result['qid']; $question=$result['question']; The code above isn't working - as when I try to echo each variable <?php echo $question;?> nothing is being shown on screen. I'm obviously barking up the wrong tree in the way I'm trying to create the variable - but don't really have any idea where to look next. hi guys. i am trying to set a variable to the session global variable. I've initialized the session with session_start(); at the very beginning of my website, and then i try finding if a session variable has been set like so if(isset($_SESSION['user'])) { print 'user is logged in'; } but this works in reverse. i have not set any session variables, but asking if it is set, results in an affirmative answer. so i am thinking this is because of register_globals. because i went to read about register_globals, and it says that if register_globals is turned off, i cannot use any other varibale except members of the session array. i dont know what that is yet, but a question befo in the php manual it says register_globals is deprecated, and it appears i need to enable it to set other variables as session variables besides it's associative array. if this is true, how to enable register_globals and allow other variables to be used as session variables? I have a query: $query ="select * FROM telephone_admin where name Like ' ".$_GET['answer']." ' "; I would like to add % before and after so that the query will search for result which contains the PHP variable $_GET['answer'] before or after, but the problem is how can I add % before or after ' ".$_GET['answer']." ' within the query?? Thanks! This is more of a technical question that i could not find the answer to pn the php.net manual pages. take the folowing example code: foreach ($array as $key => $value){ $tempvariable = some_property_of($value); } unset($tempvariable); is that unset statement needed? Does PHP automatically destroy the variables once the foreach loop is left? This question may sound very lame... ... But I have never able to know how to define a variable that I can use in different functions in a same file. There is no class structure just a PHP file with some functions. Is it possible to use some type of variable that can be share by all functions and that variable should not be a session variable . Something like: <?php $my_global_var; function A() { // use $my_global_var here } function B() { // use $my_global_var here and should retain the last value } ?> Something like in VB6.... Thanks |
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