memory_get_peak_usage

Function name: memory_get_peak_usage()

Applicable version: PHP 5 >= 5.2.0, PHP 7

Usage: The memory_get_peak_usage() function is used to obtain the memory peak usage during the current script execution. It returns an integer representing the memory usage in bytes.

Example:

 // 示例1：获取当前脚本的内存峰值使用量$peakUsage = memory_get_peak_usage(); echo "当前脚本的内存峰值使用量为：" . $peakUsage . " 字节"; // 示例2：获取某个函数或代码段的内存峰值使用量function myFunction() { $data = str_repeat("Hello", 1000000); // 生成一个较大的字符串echo "当前函数的内存峰值使用量为：" . memory_get_peak_usage() . " 字节"; } myFunction();

Notes:

• This function may differ in different operating systems and PHP configurations.
• Since memory usage is calculated based on the execution process of the current script, the memory peak usage of the same piece of code may vary in different environments.
• This function can be called multiple times at different locations in the code to get memory usage at different points in time for performance optimization or memory management.