PHP – echo Keyword
The PHP echo keyword is used to output text, and can output multiple strings separated by commas.
PHP – else Keyword
The PHP else keyword specifies a block of code which should run when the condition of an if statement is not met.
PHP – elseif Keyword
The PHP elseif keyword tests a new condition if the condition of a previous if or elseif statement was not met.
PHP – empty Keyword
The PHP empty keyword acts as a function which returns true if a variable does not exist, or if its value is considered empty.
PHP – enddeclare Keyword
The PHP enddeclare keyword is used to close a declare block which was started using the declare syntax.
PHP – endfor Keyword
The PHP endfor keyword is used to close the code block of a for loop which was started using the for syntax.
PHP – endforeach Keyword
The PHP endforeach keyword is used to close the code block of a foreach loop which was started using the foreach syntax.
PHP – endif Keyword
The PHP endif keyword is used to mark the end of an if conditional which was started with the if, or elseif syntax.
PHP – endswitch Keyword
The PHP endswitch keyword is used to mark the end of a switch conditional which was started with the switch syntax.
PHP – extends Keyword
The PHP extends keyword is used to derive a class from another class, and therefore inherits all the properties of the class that it is derived from.
PHP – final Keyword
The PHP final keyword is used to prevent a class from being inherited and to prevents inherited methods from being overridden.
PHP – finally Keyword
The PHP finally keyword is used in try…finally and try…catch…finally structures to run a block of code whether or not an exception occurred.
PHP – fn Keyword
The PHP fn keyword is used to create arrow functions which have access to all variables from the scope in which they were created.
PHP – for Keyword
The PHP for keyword is used to create a for loop, which loops through a block of code a specified number of times.
PHP – foreach Keyword
The PHP foreach keyword is used to create foreach loops, which loops through a block of code for each element in an array.
PHP – global Keyword
The PHP global keyword imports variables from the global scope into the local scope of a function.
PHP – if Keyword
The PHP if keyword is used to create an if conditional. The elseif and else keywords can then be used to run code when the if condition is not met.
PHP – implements Keyword
The PHP implements keyword is used to declare that a class must have the methods described in the specified interface (called polymorphism).
PHP – include Keyword
The PHP include keyword is used to embed PHP code from another file. If the file is not found, a warning is shown and the program continues to run.