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Closed 6 years ago.
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I am trying to use the condition:
isset($_SESSION['id'])
So i just tried
echo isset($_SESSION['id']); and echo $_SESSION['id'];
But this gives output different. In fact true result gives by
echo $_SESSION['id'];
Any one have idea why this is happening?
Note: I use session_start(); at the beginning of page.
isset is used in if condition, in case you want to check if session is set or not:
<?php
if(isset($_SESSION['id'])) { // check if session named 'id' is exist
echo $_SESSION['id'];
}
?>
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Closed 2 years ago.
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Please can anyone help me out, I've done an API Call and I need to get a single value from the response, as response comes with jsonp.
jsonp ({"statuscode":"025","RRR":"290007816182","status":"Payment Reference generated"})"
You should get response in a variable and use json_decode function like following :
$response = '{"statuscode":"025","RRR":"290007816182","status":"Payment Reference generated"}';
$result = json_decode($response);
echo $result->statuscode;
echo "<br>";
echo $result->RRR;
echo "<br>";
echo $result->status;
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Closed 5 years ago.
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I am trying to pass some variables through url in php. Im using the following script
$query1 = new ParseQuery("Drivers");
$query1->includeKey("driverUserId");
$query1->descending("createdAt");
$results1 = $query1->find();
$object1 = $results1[$i];
$uname=$object1->get('driverUserId');
echo ''.$uname->get('name').'';
echo '<td>'.$uname->get('name').'</td>';
echo '<td>'.$uname->get('username').'</td>';
But when I execute the page, script stopped working in this line.
echo ''.$uname->get('name').'';
When I removed '.$uname.' it worked fine.
Because if $uname has a ->get() method, it's obviously a class or an object and you can't directly use it like a string (if it hasn't any tostring modifiers). Try to write it like this (just guessing):
echo ''.$uname->get('name').'';
Use the below code:
$id=$uname->get('id');
$name=$uname->get('name');
echo ''.$name.'';
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I'm retrieving the postal code by using -
<?php $pstcde = file_get_contents('https://ipapi.co/'.$_SERVER['REMOTE_ADDR'] . '/postal/'); ?>
It works great but if the postal code is not found, it says, "None". I can't find a way to disable the message.
You can empty the variable if the respond is None. With a simple check.
<?php
$pstcde = file_get_contents('https://ipapi.co/'.$_SERVER['REMOTE_ADDR'] . '/postal/');
if($pstcde === "None")
$pstcde = ""; //Empty string. Or you can use unset($pstcde); if you want to unset the variable.
?>
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Closed 7 years ago.
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Im newbie in php im learning it since some weeks ago but i didnt understand one thing.
I have a
$url = "http://example.com/";
define('LOCATION', '<?php echo $url; ?>');
but it is not working. I didnt understand why "define" term cannot read
<?php
$url = "http://example.com/";
define('LOCATION', $url);
1.You are alreay in php tag,so no need of any extra php tag.
2.And when assigning value to a variable , we never use echo in php . Its used to display value in html only.
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Closed 8 years ago.
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I need to access the input value of a dynamic variable based on another input field.
Sample code:
$upid=$_GET['upid'];
$check_box_name='c'.$upid;
echo $upid;
$check=$_GET[$check_box_name];
any idea how do i access it??...Please help
The code you entered should work, but, it is vulnerable to errors, as you are dealing with a user input, you should either do a validation or a failover value.
If you are using PHP5.3+, you can easily do this as follows:
if ($check = #$_GET['c' . (#$_GET['upid'])]? : false !== false) {
//do something with $check
} else {
//failed
}
The # sign is used to omit any error or exception from being thrown. Also, it maybe a good thing to escape the $check variable for more security.