Αποτελέσματα Αναζήτησης
24 Οκτ 2012 · isset() can be appropriate when you specify a key within $_POST AND want to allow a falsey value like 0. Particular to email value submissions, using !empty() is an inadequate tool to validate an email address. From php.net, isset. Returns TRUE if var exists and has value other than NULL, FALSE otherwise. empty space is considered as set.
The isset() function checks whether a variable is set, which means that it has to be declared and is not NULL. This function returns true if the variable exists and is not NULL, otherwise it returns false.
11 Απρ 2021 · They are not PHP functions and therefore they are probably causing your problem. If they are not valid, they can throw a false value and therefore send you back to the sign up page. As Phdr said, we can not debug something we can not see…
isset — Determine if a variable is declared and is different than null. Determine if a variable is considered set, this means if a variable is declared and is different than null. If a variable has been unset with the unset () function, it is no longer considered to be set.
30 Ιαν 2023 · This article teaches you four solutions to undefined index in a PHP post array. The solutions will use isset(), array_key_exists(), in_array(), and the Null coalescing operator. First, we'll reproduce the error and then we'll show you the solutions. Meanwhile, in PHP 8, undefined index is the same undefined array key.
6 Αυγ 2012 · Your isset checks if a name value pair exist with the key "submit". So if you have a submit button but it has a different name other than submit then you have to use that with isset.
9 Σεπ 2020 · By debugging I found that isset post submit function is not responding. It remains on the same page after submitting form. I have googled all the possible solutions to this problem but none worked.
