PHP short-ternary ("Elvis") operator vs null coalescing operator
Can someone explain the differences between ternary operator shorthand (?:) and null coalescing operator (??) in PHP? When do they behave differently and when in the same way (if that …
How to call a PHP function on the click of a button
Calling a PHP function using the HTML button: Create an HTML form document which contains the HTML button. When the button is clicked the method POST is called.
How to get input field value using PHP - Stack Overflow
Use PHP's $_POST or $_GET superglobals to retrieve the value of the input tag via the name of the HTML tag. For Example, change the method in your form and then echo out the value by …
How can I combine two strings together in PHP? - Stack Overflow
In PHP variables contained in double quoted strings are interpolated (i.e. their values are "swapped out" for the variable). This means you can place the variables in place of the strings …
php - Fastest way to handle undefined array key - Stack Overflow
In a very tight loop I need to access tens of thousands of values in an array containing millions of elements. The key can be undefined: In that case it shall be legal to return NULL without any er...
php - Show a number to two decimal places - Stack Overflow
Update for PHP 7.4+ since this answer is very old. Since round returns a float it can only be guaranteed to return a number with at most one decimal place (ie, it returns something that is …
syntax - What does '<?=' mean in PHP? - Stack Overflow
Note that the ; is redundant; as the answers suggest this short-tag expands to an echo with a semicolon added to the end, as per the php documents.
PHP header (Location: ...): Force URL change in address bar
I'm currently working on a mobile site with authentication using PHP sessions with a database. I have a login page with a form that goes to server_login.php on submit. The php file then …
php - List of All Locales and Their Short Codes? - Stack Overflow
I'm looking for a list of all locales and their short codes for a PHP application I am writing. Is there much variation in this data between platforms? Also, if I am developing an international
command line - Running PHP in Windows: how to fix "PHP …
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/php5/ext\php_curl.dll' - The specified module could not be found. in Unknown on line 0