PHP Variable Variables
Updated 1st June 2022
In PHP, it is sometimes necessary to have variables that have variable names. Traditionally, a variable is given a name and a value is given to the variable like so: $foo = 'bar'; A Variable Variable, or Double Dollar Variable, gets its name from the value of another variable like so: $foo = 'bar'; $$foo
Angular: Call a Parent method in Child Component using @Output
Updated 16th August 2022
In JavaScript frameworks, such as Angular, it’s common for components to communicate with each other and send data back and forth. In this post, I will show you how to call a parent method from a child component in Angular with the @Output decorator using EventEmitters. In all JavaScript frameworks, it’s common for child components
SQL Union – What is a Union and how to combine two or more SQL Select queries
Updated 1st December 2023
The SQL UNION Operator is used to combine two or more SELECT statements together into one set of results. Things to know about SQL Union Operator To execute a SQL UNION statement successfully, you need to be away of the requirements of a UNION statement. Example using SQL UNION In our example we have 2
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