Can we use JavaScript variable in PHP?

Can we use JavaScript variable in PHP?

The way to pass a JavaScript variable to PHP is through a request. This type of URL is only visible if we use the GET action, the POST action hides the information in the URL. Server Side(PHP): On the server side PHP page, we request for the data submitted by the form and display the result. $result = $_GET [ ‘data’ ];

Can JavaScript return a value?

JavaScript passes a value from a function back to the code that called it by using the return statement. The value to be returned is specified in the return. That value can be a constant value, a variable, or a calculation where the result of the calculation is returned.

How set PHP variable in JavaScript?

Inside the JavaScript, we can use the PHP tag to echo the PHP variable assigning it to a JavaScript variable. For example, assign a value Metallica to a variable $var inside the PHP tags. Write a script tag and inside it, write a PHP tag. Inside the PHP tag, echo a JavaScript variable jsvar .

Does a function have to return a value PHP?

You do not need to return values from functions -> it is completely optional.

Is echo the same as return?

Echo is for display, while return is used to store a value, which may or may not be used for display or other use.

How use JavaScript variable in PHP SQL query?

php $var1 = $_POST[‘var1’]; $var2 = $_POST[‘var2′]; $getvalue=”SELECT id,name from table1 WHERE column1=’$var1’ and column2=’$var2′”; $result=mysql_query($getvalue) or die(mysql_error()); while($row=mysql_fetch_array($result)){ extract($row); echo $name; }?>

How store JavaScript value in database?

One thing you could do is change your span tags to input tags and then just change your JavaScript to set the value attribute instead of the innerText . Then when you submit the form, it will pass those values to your PHP script.

How do you call a function that returns a function?

Calling the function with () in a return statement executes the function, and returns whatever value was returned by the function. It is similar to calling var x = b(); , but instead of assigning the return value of b() you are returning it from the calling function a() .

What is the work of return in function?

A return statement ends the execution of a function, and returns control to the calling function. Execution resumes in the calling function at the point immediately following the call. A return statement can return a value to the calling function.

Can you call a PHP function from JavaScript?

The reason you can’t simply call a PHP function from JavaScript has to do with the order in which these languages are run. PHP is a server-side language, and JavaScript is primarily a client-side language.

Does echo return in PHP?

echo and print are more or less the same. They are both used to output data to the screen. The differences are small: echo has no return value while print has a return value of 1 so it can be used in expressions.

Is echo the same as return PHP?

  • August 2, 2022