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$php _self = isset ($_server[' php_self ')? $_server[' php_self ': $_server[' script_name '];if ('/' = = substr ($php _self,-1)) { $php _self. = ' index.php ';} Define (' Php_self ', $php _self); If Echo basename (php_self) Display as:

This problem occurs when you enable the error prompt in php, you will be notified of some programming errors. next I will analyze phpNotice: Undefinedindex error prompt method for you, for more information, see. This problem occurs when you enable

#! /Bin/bash # This is a script for add ftpusers While:; do If [-z $ user]; then Read-p "please enter your ftp username:" user Else While:; do If [$ (echo $ pw | wc-c)-le 12]; then Read-p "please enter your ftp password (please enter the password,

In Linux, there is no exec () function, exec refers to a set of functions, a total of 6, namely: #include extern char **environ; int execl (const char *path, const char *arg, ...); int EXECLP (const char *file, const char *arg, ...); int execle

Shell string comparisons, judging whether it's a number Binary comparison operators, comparing variables or comparing numbers. Notice the difference between the number and the string. Integer Comparisons -eq equals, such as: if ["$a"-eq

1. Define functions within the shell file and refer to: Copy Code code as follows: [~/shell/function]# Cat factorial.sh #!/bin/bash function factorial { Factorial=1 For ((I=1;i Todo factorial=$[$factorial * $i] Done

Shell string Comparisons The method of comparison of integers in a Shell and the method of comparing strings, such as equals, not equal to, greater than, greater than or equal, less than, etc. Binary comparison operator, comparing variables or

Original: http://apps.hi.baidu.com/share/detail/31263915 Comparison of strings and values in the shell In the shell, the comparison between the string and the numerical method is different, pay attention to distinguish Integer comparison: -eq

Yesterday a PGP encryption disk broke, everything lost ... , My notes! How can I be 2?Back up a script, convenient for later mobile phone view, saying I almost forgot the account passwordNote: footstep recovery can only be restored to the state

Php has many optional syntaxes. For example, echo can use echo () and print () to output text. Their difference is that the print () function has a return value of 1, which indicates that the output is successful, 0 indicates that the output fails.

In a loop, when echo links and outputs some variables and strings, how can the output performance be higher? 1. use $ html & quot; variables and ". and then output {code ...} 2. use one echo + multiple commas to output {code ...} 3. multiple echo

To facilitate obtaining and modifying terminal parameters through a program, Linux also provides tcgetattr and tcsetattr functions. Tcgetattr is used to obtain terminal-related parameters, while the tcsetattr function is used to set terminal

Source: http://www.cnblogs.com/xiaotlili/archive/2011/08/06/2129510.html I. Data Member The termios function family provides a conventional Terminal interface for controlling non-synchronous communication ports. This structure contains at least the

How does PHP read all the content of a node in the INI file? Suppose there is an ini file (aa. ini) with the following content: [Aa] AB = 12 Ac = 123 Ad = 1234 [Bb] Bb = 22 Bc = 343 The items in [aa] and [bb] are not fixed. how can I read only the

Count the number of times each Git version Library submitted and the number of lines added or deleted by code. Count the number of times submitted by each Git version Library and the number of lines added or deleted by code. Script 1. simple

Phpdebug records program execution time and execution status /*** Debuging ('dtrace '); // view the call stack * debuging ($ var); // Print $ var (var_dump) * debuging ($ var, 'php'); // Print $ var (var_export) * debuging ($ var, $ echo, 2 ); //

#!/bin/bash#subject       &nbsp: One-click Installation Lamp (apache + mysql +  php) #Date                  :2016-06-08# definition software Download directory: softdir= '/usr/local/src ' #定义编译函数: Function make ()  {         if [  ' echo $? '  -eq 0 

Initialize mysql bitsCN.com in Linux and Windows In Linux and Windows, after mysql is installed, the service cannot be started directly. you must initialize the database first. Initialization mainly includes initializing logs, tablespaces, and other

Php password & lt ;? Session_start (); $ p1 $ _ POST [pin]. & quot; _ & quot; $ p2 $ _ SESSION [pin]; echo $ p1; echo $ p2; echo $ _ POST [pin] $ _ SESSION [pin]; -- returns 1if ($ p1 php password PHP code $ _ POST [pin] is aaa, and $

To install MySQL in Linux, you need to initialize the Linux environment. after installing MySQL, you cannot directly start the service. you must first initialize the database. Initialization mainly includes: Initialize required files for logs,