Snippets tagged “isset”
18 snippets use this tag.
- $_SERVER['HTTP_REFERER'] missingPHP
The $_SERVER['HTTP_REFERER'] variable is a server-side variable that contains the URL of the page that linked to the current page.
- Best way to give a variable a default value (simulate Perl ||, ||= )PHP
The best way to give a variable a default value in PHP is to use the ternary operator ?:.
- Best way to test for a variable's existence in PHP; isset() is clearly brokenPHP
In PHP, the isset() function is used to check if a variable has been set, meaning that it has been declared and is not equal to NULL.
- Can't use function return value in write context?PHP
In PHP, this error message typically occurs when a function or method that is expected to return a value is being used in a context where a value cannot be written.
- Check if $_POST existsPHP
To check if the $_POST superglobal variable exists in PHP, you can use the isset() function.
- CHECK PHP SESSION - ISSET($SESSION - IS NOT WORKINGPHP
It sounds like you are having an issue with the isset() function in PHP not working properly when checking for a session variable.
- Get URL query string parametersPHP
To get the query string parameters in PHP, you can use the $_GET superglobal array.
- How to Deal With Undefined Offset Error in PHPPHP
Here is a snippet that will help you to deal with a common PHP undefined offset error. Here, you will find three methods that help to avoid such an error.
- How to find array / dictionary value using key?PHP
In PHP, you can use the $array[$key] syntax to get the value stored at a particular key in an array.
- How to fix 'Creating default object from empty value' warning in PHP?PHP
This error typically occurs when a variable is accessed as an object, but it has not been initialized or set to an object.
- How to handle Undefined Offset in laravel?PHP
In Laravel, an "Undefined offset" error typically occurs when trying to access an array index that does not exist.
- How to Read Whether a Checkbox is Checked in PHPPHP
In this tutorial, you can find comprehensive information on how to read whether a checkbox is checked in PHP.
- isset PHP isset($_GET['something']) ? $_GET['something'] : ''PHP
In PHP, isset() is a function that determines whether a variable is set and is not NULL.
- Message: Trying to access array offset on value of type nullPHP
This error message is indicating that you are trying to access an array offset (i.e., an element of an array) but the value being accessed is null.
- PHP - warning - Undefined property: stdClass - fix?PHP
It looks like you are trying to access a property of an object that has not been defined.
- PHP check if url parameter existsPHP
To check if a URL parameter exists in PHP, you can use the isset function.
- PHP Fatal error: Cannot access empty propertyPHP
This error message typically occurs in PHP when you are trying to access a property of an object or variable that has not been initialized or does not exist.
- PHP isset() with multiple parametersPHP
The isset() function in PHP can take multiple parameters, and it will return TRUE if all of the variables passed to it have been set, and FALSE if any of them have not.