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This article mainly explains "the meaning of int in php is not an integer". The content of the explanation in the article is simple and clear, and it is easy to learn and understand. Please follow Xiaobian's train of thought to study and learn "the meaning of int in php is not an integer".

Int in PHP means an integer. Int is the abbreviation of "Integer", which means integers, integers, and is one of the basic data types of PHP; integers contain only integers, including positive and negative numbers, that is, numbers without decimal or decimal points, and the integer value int can be expressed in decimal, hexadecimal, octal, or binary.

This article operating environment: Windows10 system, PHP7.1 version, Dell G3 computer

Does int in php mean an integer?

Int in php means an integer.

Integer (Integer)

Integers contain only integers, including positive and negative numbers, that is, numbers with no decimal part or decimal point.

Int is a number in the set ℤ= {,-2,-1, 0, 1, 2,.}.

They can be decimal (base 10), octal (base 8), or hexadecimal (base 16). The default cardinality is decimal (cardinality 10). Octal integers can be declared with leading 0 and hexadecimal with leading 0x. The integer range must be between-2 ^ 31 and 2 ^ 31.

The integer value int can be expressed in decimal, hexadecimal, octal, or binary, preceded by an optional symbol (- or +). You can use a negative operator to represent a negative int.

To use octal representation, the number must be preceded by 0 (zero). Since PHP 8.1.0, octal expressions can also be preceded by 0o or 0O. To use hexadecimal representation, the number must be preceded by 0x. To use a binary representation, the number must be preceded by 0b.

Starting with PHP 7.4.0, integer values may include underscores (_), which are filtered out by PHP when displayed for a better reading experience.

Examples are as follows:

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