Php validating date input
We want to make filling out web forms as easy as possible. There are three main reasons: In the real world, developers tend to use a combination of client-side and server-side validation.
One of the features of HTML5 is the ability to validate most user data without relying on scripts.
This API consists of a set of methods and properties available on each form element.
attribute to turn off the browser's automatic validation; this lets our script take control over validation.
This is done by using validation attributes on form elements, which allow you to specify rules for a form input like whether a value needs to be filled in, the minimum and maximum length of the data, whether it needs to be a number, an email address, or something else, and a pattern that it must match.
More and more browsers now support the constraint validation API, and it's becoming reliable.$my Calendar- Optional: Set the tooltip info to be displayed on certain dates, recursively or not.dates: the array of dates, and date should be in format YYYY-MM-DD tooltip: string/text to be displayed when mouse hover the icon in the top-right corner of each day recursive: "" (blank)=no recursive, calendar will process only on exact date, "month"=monthly recursive, or "year"=yearly recursive hint: the function can be called any number of times, like all 5 examples below, together; multi-tooltips will be displayed on multi-lines, in this main order: non-recurrent, monthly then yearly, and then in the order of calling the function. $my Calendar- Optional: Set whether the calendar will be start on Sunday or Monday. $my Calendar-auto Submit(true, "my Form"); //assume that the calendar is in the form named 'my Form', then tell the calendar to auto submit the value (other values in my Form will be submitted together by html post method) Ex 2. Specify only date from or to will set range from/upto year set by set Year Interval method. $my Calendar- Optional: Set the alignment of calendar datepicker with the calendar container.The value of horizontal alignment can be 'left' or 'right' (default) and the value of vertical alignment can be 'top' or 'bottom' (default). $my Calendar- Optional: Set the specific to enable or disable.