Html input type radio allows user to choose one option from the given choices. Your php code must be able to handle instances where no radio button was submitted.
Php script for radio button field.
If the value is not chosen we are showing a message to the user to choose the value from the group of radio buttons. Below codes contains php script to get a selected value from given html input type radio. Get selected value of a radio button in php use post to get the value of the selected radio button.
In order for php to extract the data from the html form the following line of code are used. The function returns the variable val which contains either the value of the selected radio button or undefined if none are selected. The text you place after the input tag is the text that is shown in the radio button options.
Each choice for a certain question should have the same name but different value. Html forms html forms code input type radio name php echo. Html getting input using form without database or php.
As a result they end up with nasty undefined index errors. The first radio button has a value of male and the second radio button has a value of female. The above will yield the value of a checked or selected as it is also called radio button element if any or null otherwise.
In the html above the name of the radio buttons is the same gender. A lot of beginner developers make the mistake of assuming that one of their radio buttons will be ticked. As we iterate through the loop if the current radio button s checked property evaluates to true we hold its value in a variable and break out of the for loop.
See more linked questions. The crux of the solution is the nameditem function which works with radio buttons specifically. To get selected value of a radio button.
If you want to select a radio button by default usually the first one you add checked checked to the first radio button.