What are the interesting functions in php?

Interesting functions in php include: 1. cli_set_process_title function; 2. memory_get_peak_usage function; 3. memory_get_usage function; 4. get_cfg_var function, etc.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

What are the interesting functions of php?

Some interesting functions of php:

cli_set_process_title('abcd'); Give the current php process a resounding name;

echo cli_get_process_title(); Get the name of the current php process

Only valid in php-cli

The memory_get_peak_usage() function returns the peak memory usage,

memory_get_usage() can return the amount of memory currently allocated to the PHP script

##get_cfg_var('error_reporting'); Get the value of the PHP configuration option

get_current_user() Get the current PHP script owner name, get the computer user name

<?php
define(&#39;TIONCICO&#39;,&#39;仙士可&#39;);
const TIONCICO2=&#39;仙士可2号&#39;;
function zhuangbi(){
    
}
$tioncico=&#39;仙士可&#39;;
var_dump(get_defined_constants());//返回所有常量的关联数组，键是常量名，值是常量值 define,const定义的都是常量,类里面的const不会返回,static不会返回
var_dump(get_defined_functions());//  获取php所有internal已有函数以及user自己已经定义的函数
var_dump(get_defined_vars());// 获取php所有已定义变量的数组,包括环境变量,服务器变量,用户变量
var_dump(get_loaded_extensions());// — 返回所有编译并加载模块名的 array
var_dump(get_extension_funcs(&#39;mysql&#39;));// — 返回模块函数名称的数组  模块是指php扩展,可获取该扩展所有内置的函数

An array of all constants, including user-defined

All functions

All defined variables, including global variables and user-defined variables

All loaded modules

mysql module function

echo sys_get_temp_dir();//Return to the temporary file directory

echo PHP_VERSION;

var_dump(version_compare(PHP_VERSION,'5.6','gt'));//Is the current version greater than 5.6

echo highlight_file('1.php'); Highlight output php file code

echo php_sapi_name(); // Returns the interface between the web server and PHP Type

Recommended learning: "

PHP Video Tutorial"

The above is the detailed content of What are the interesting functions in php?. For more information, please follow other related articles on the PHP Chinese website!