php 64 bit integer

The integer range of 32-bit and 64-bit PHP and MySQL is 8 bytes, so the 32-bit int type occupies 32-bit/8-bit = 4 bytes, 64-bit int occupies 64-bit/8-bit = 8 bytes. 32-bit, 64-bit unsigned integer maximum value: 2 ^ 64-1 = 18446744073709551615

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One byte has 8 bits, so the 32-bit int occupies 32-bit/8-bit = 4-byte, and 64-bit int uses 64-bit/8-bit = 8 bytes. 32-bit, 64-bit unsigned integer maximum value: 2^64-1 = 18446744073709551615 2^32-1 = 4294967295 32-bit, 64-bit signed integer

Project requirements: encode a 64-bit integer into a network byte sequence. I know that pack (& #039; J & #039;, $ bigint) can be used in php5.6.3 and later versions ), but in this case, I have to disagree with the new php version. Now the company

Compatibility of PHP built-in functions with 32-bit and 64-bit platforms. In the LieHuo. Net tutorial, the integer in PHP is the long type in the C language and is signed. The maximum value is 2 ^ 31. On a 64-bit platform, the length can reach 2 ^ 63

In PHP, the conversion of data types can be done directly using the pack. For example, the character type, short integer, integral type, long integer can be used respectively, the parameters C, s, I, N to express, of course, the converted data here

This article analyzes the usage differences between floating-point (float) and integer (integer) data types in PHP and, in that case, insufficient data lengths. The value can only be true or false, and when other types are converted to Boolean, the

www.Bkjia.com Tutorial The integer in PHP is the long type in the C language, is signed, and the maximum value is 2^31. On a 64-bit platform, long can reach 2^63. In this case, some of the results of the PHP function output will be inconsistent on

Clevercode recently encountered a PHP project shaping transformation problem, MySQL has a field ID is bigint, there is a long integer, such as id = 5147486396. However, the PHP code is deployed in several machines for historical reasons, including a

This article analyzes the differences between float and integer data types in php and the insufficient data length in that case. The value can only be True or False. when other types are converted to the boolean type, the following values are