How do you end a PHP file?
As in C or Perl, PHP requires instructions to be terminated with a semicolon at the end of each statement. The closing tag of a block of PHP code automatically implies a semicolon; you do not need to have a semicolon terminating the last line of a PHP block.
How does PHP know when one statement ends?
Statements usually end with a semicolon. In addition, statements can be grouped into a statement-group by encapsulating a group of statements with curly braces. A statement-group is a statement by itself as well. The various statement types are described in this chapter.
The first and second tags are the ones most recommended and most widely used. Using a tag which is rarely used may result in a web-server being unable to detect the start and end of the PHP code.
How do I open and close a PHP file?
PHP Close File – fclose()
$myfile = fopen(“webdictionary. txt”, “r”); // some code to be executed…. fclose($myfile);
What does exit () do in PHP?
The exit() function in PHP is an inbuilt function which is used to output a message and terminate the current script. The exit() function only terminates the execution of the script. … The message to be displayed is passed as a parameter to the exit() function and it terminates the script and displays the message.
Is switch faster than if else PHP?
General rule is use switch whenever the number of conditions is greater than 3 (for readability). if / else if / else is more flexible (hence better), but switch is slightly faster because it just computes the condition once and then checks for the output, while if has to do this every time.
What is the alternative to PHP switch?
An alternative for switch statement called “Match expression” has been accepted in this RFC. The RFC proposes adding a new match expression that is similar to switch but with safer semantics and the ability to return values.
Is PHP a Typesafe?
By this definition, PHP will never be type safe (PHP’s compiler hardly prohibits any type errors). But that definition also isn’t particularly useful to the majority of developers. … Type safety measures the ability of available language tooling to help avoid type errors when running code in a production environment.
tags to remain compliant with standards. Using short tags should be avoided when developing applications or libraries that are meant for redistribution, or deployment on PHP servers which are not under your control, because short tags may not be supported on the target server.