Web Reference: PHP automatically associates a data type to the variable, depending on its value. Since the data types are not set in a strict sense, you can do things like adding a string to an integer without causing an error. Apr 11, 2025 · PHP allows us to use dynamic variable names, called variable variables. Variable variables are simply variables whose names are dynamically created by another variable's value. Sometimes it is convenient to be able to have variable variable names. That is, a variable name which can be set and used dynamically. A normal variable is set with a statement such as: A variable variable takes the value of a variable and treats that as the name of a variable.
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