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This article will explain in detail what is meant by integer in php. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

In PHP, integers are numeric data that do not contain decimal parts, and refer to a number in the collection "{...,-2,-1, 0, 1, 2,...}"; integer values can be expressed in decimal, hexadecimal, octal, or binary, preceded by optional symbols, and negative operators can be used to represent a negative int.

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

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An integer is a number in the set {.,-2,-1, 0, 1, 2,.}

Integer (INTEGER) data is numerical data that does not contain fractional parts.

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.

Example # 1 Integer text representation

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