Does My PHP Installation Support 64-Bit Integers?

Determining 64-Bit Integer Support in PHP

Querying the PHP configuration files often yields little insight into the availability of 64-bit integers. Instead, the platform on which PHP is compiled and the underlying hardware play a crucial role.

Native 64-Bit Integer Support

For native support of 64-bit integers, both the following conditions must be met:

• 64-Bit Processor Architecture: The underlying hardware must feature a 64-bit architecture.
• 64-Bit PHP Version: The installed PHP version must specifically target 64-bit systems.

Verifying 64-Bit Integer Support

Executing the following PHP script on different platforms can confirm the availability of 64-bit integers:

<?php
echo PHP_INT_MAX . PHP_EOL;

• 32-Bit Hardware: 2147483647
• 64-Bit Hardware: 9223372036854775807

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