How to convert php bytes to double floating point

In PHP, you can use the "pack()" function to convert bytes to double-precision floating point numbers: 1. Create a PHP sample file; 2. Define a string variable containing byte data "$ bytes"; 3. The "unpack()" function uses the specified format to convert the byte data into an array, and then obtains the converted double-precision floating point number through index [1]; 4. Echo outputs the result.

Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

In PHP, you can use the pack() function to convert bytes to double-precision floating point numbers.

Here is a sample code that converts bytes to a double precision floating point number:

$bytes = "\x40\x49\x0f\xdb\x33\x33\x33\x33"; // 字节数据
double=unpack("d",double = unpack("d", double=unpack("d",bytes)[1];  // 将字节数据转换为双精度浮点数
echo $double;  // 输出结果：3.14159

In the above example, $bytes is a string containing byte data. The unpack() function converts the byte data into an array using the specified format ("d" represents a double-precision floating point number), and then obtains the converted double-precision floating point number through index [1].

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