code echo

The substr () function returns part of the string.SyntaxSubstr (string, start, length)Example 1 The code is as follows:Copy code Echo substr ("Hello world! ", 6 );?>Output:World! Example 2 The code is as follows:Copy code Echo substr

1. question: after DateTimePicker of YII sets the maximum available date, the previous month and the current month of the maximum date cannot be selected. Is this a bug of DateTimePicker itself? How can this problem be solved? (For example, if you

I want to change Apache2.2 to Nginx for a few days. Today I will try it. Found a stable version: 1.4.1 http://nginx.org/download/nginx-1.4.1.zipThe configuration is very simple, that is, it is troublesome to manage nginx and php-cgi

The simplest way to call a custom navigation menu is: The code is as follows:Copy code Wp_nav_menu (); This statement loads the menu created by the user or calls a standard page list if the menu does not exist.However, we often want to

Chinese truncation function The code is as follows:Copy code Function utf8_trim ($ str){$ Len = strlen ($ str );For ($ I = strlen ($ str)-1; $ I >=0; $ I-= 1 ){$ Hex. = ''. ord ($ str [$ I]);$ Ch = ord ($ str [$ I]);If ($ ch & 128) = 0) return

If you use the wamp integrated installation environment, your php configuration is at D:/wamp/bin/apache/Apache2.2.17/bin.You need to copy and overwrite php under D:/wamp/bin/php/php5.3.3. ini. Otherwise, an error such as Fatal error: Call to

Obtaining the date and time is also frequently used in website design. Php provides the date () time function to implement this function. The structure is as follows:Instance: The code is as follows:Copy code Echo date ("F j, Y, g: I a"). "&

Have you tried this method?First, make sure that this file is available: The code is as follows:Copy code /Sys/class/backlight/acpi_video0/brightness The cat value is your current screen brightness.Modify the following file to add some user

Bat obtains the previous month.If you want to back up the last month's files at the beginning of each month, you need to obtain the last month's Month. Note that the last month of July is July, in addition, the result of reducing the number by 1 for

A small case of automatic verification of TP verification codeTemplate file formAction=""Method= "POST"> P>User:inputtype= "text"name= "Name1"ID=""> P> P>PASS:inputtype= "Password"name= "Pass1"ID=""> P>

TP in the verification code is a lot simpler, less to the original more cumbersome operation, below to take a look at the verification code example!yzm1.html Front Desk templates formAction=""Method= "POST"> inputtype= "text"name=

Strtotime Definitions and usage The strtotime () function resolves the date-time description of any English text to a Unix timestamp. Grammar Strtotime (time,now) parameter descriptionTime to specify the string to parse.Now is the time stamp used

Technology world: Googlehacking is using Google's search engine to quickly find vulnerable hosts and information that contains sensitive data, a recent attack that was manually operated by hackers can be done automatically through a new worm. In

When using PHP's Json_encode to process Chinese, Chinese will be coded, become unreadable, resemble "u***" format, and increase the amount of data transferred to some extent. The code is as follows Copy Code Echo

Code for CAPTCHA class: ValidationcodeClass Validationcode {Private $width;Private $height;Private $codeNum;Private $image; Image ResourcesPrivate $disturbColorNum;Private $checkCode;function __construct ($width =80, $height =20, $codeNum =4) {$this-

Note: If you want to use PHP GD processing we need to open the GD library GD Library support for PHP under Windows Find php.ini, open content, find: ; Extension=php_gd2.dll Put the front semicolon ";" Remove, then save, if there is no semicolon,

Buffering (buffer) is a technique used to coordinate data transfer between devices with very different throughput speeds, and the area used to hold buffered data is called a buffer, and in computer science, a buffer is used to temporarily store data

Method One Using mysqldump The code is as follows Copy Code @echo offSet path=c:/"program Files"/winrar;%path%Set mysqlpath=c:/"program Files"/mysql/"MySQL Server 5.0"Set Bakpath=e:/mysql_bakSet Username=rootSet

Ajax frameworks are a collection of modular Ajax capabilities that can be implemented in a variety of languages (such as Sajax with a variety of language implementations), and Ajax is just one part of jquery, Instance 1 The code is as

--Install MONGOOperating system for Centos x64Download the. tar.gz file at the official website The code is as follows Copy Code cd/data/Http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.3.tgzTar zxf mongodb-linux-