Web Reference: If you assign an integer value to a variable, the data type will automatically be an integer. If you assign a string to the same variable, the data type will change to a string: Types ¶ Table of Contents ¶ Introduction Type System NULL Booleans Integers Floating point numbers Strings Numeric strings Arrays Objects Enumerations Resources Callables Mixed Void Never Relative class types Singleton types Iterables Type declarations Type Juggling Jul 23, 2025 · In PHP, data types refer to the type of data a variable can hold. PHP supports several data types, including scalar types (integers, floats, booleans, and strings) and compound types (arrays and objects).
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