PHP 7 adds the null coalescing operator: // Fetches the value of $_GET[‘user’] and returns ‘nobody’ // if it does not exist. $username = $_GET[‘user’] ?? ‘nobody’; // This is equivalent to: $username = isset($_GET[‘user’]) ? $_GET[‘user’] : ‘nobody’; You could also look at short way of writing PHP’s ternary operator ?: (PHP >=5.3 only) … Read more
Well I was able to install it by : sudo apt-get install php-curl on my system. This will install a dependency package, which depends on the default php version. After that restart apache sudo service apache2 restart
From the PHP Manual: Warning This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide. Alternatives to this function include: mysqli_connect() PDO::__construct() use MySQLi or PDO <?php $con = mysqli_connect(‘localhost’, ‘username’, ‘password’, ‘database’);
First of all, read the warning! It says do not run composer as root! Secondly, you’re probably using Xammp on your local which has the required php libraries as default. But in your server you’re missing ext-dom. php-xml has all the related packages you need. So, you can simply install it by running: sudo apt-get … Read more
The problem is that the package that used to connect PHP to MySQL is deprecated (php5-mysql). If you install the new package, sudo apt-get install php-mysql this will automatically update Apache and PHP 7.
Since PHP 7.4 introduces type-hinting for properties, it is particularly important to provide valid values for all properties, so that all properties have values that match their declared types. A property that has never been assigned doesn’t have a null value, but it is on an undefined state, which will never match any declared type. … Read more
The <=> (“Spaceship”) operator will offer combined comparison in that it will : Return 0 if values on either side are equal Return 1 if the value on the left is greater Return -1 if the value on the right is greater The rules used by the combined comparison operator are the same as the … Read more
What is a Nullable Type? Introduced in PHP 7.1, Type declarations for parameters and return values can now be marked as nullable by prefixing the type name with a question mark. This signifies that as well as the specified type, NULL can be passed as an argument, or returned as a value, respectively. In parameters … Read more
When your first argument is null, they’re basically the same except that the null coalescing won’t output an E_NOTICE when you have an undefined variable. The PHP 7.0 migration docs has this to say: The null coalescing operator (??) has been added as syntactic sugar for the common case of needing to use a ternary … Read more
It’s best practice to hash passwords so they are not decryptable. This makes things slightly more difficult for attackers that may have gained access to your database or files. If you must encrypt your data and have it decryptable, a guide to secure encryption/decryption is available at https://paragonie.com/white-paper/2015-secure-php-data-encryption. To summarize that link: Use Libsodium – … Read more