PHP

Requirement: There is a 1 GB log file, with about more than 5 million lines. Use php to return the last few lines of content. In php, the quickest way to read files is to use functions such as file and file_get_contents, A few simple lines of code

1. php friendly error log (stored in different files by date) [php] // create log directory $ destination = 'imember _'. to_date (get_gmtime (), "Ym"); // create an error log save path if (! Is_dir ("D:/wamp/logs /". $ destination) {@ mkdir

Regular Expression is a concise and flexible Expression for searching and replacing string patterns. It is not difficult to understand the importance. However, it is not easy to implement flexible applications without some practice. In php, there

PHP date and Time Functions date () 1, year-month-day echo date ('Y-m-J'); 2007-02-6 echo date ('Y-n-J '); 07-2-6 uppercase Y indicates four digits of the year, while lowercase y indicates two digits of the Year. lowercase m indicates the number of

1. JS method: Call the php file and obtain the values in php. For example, use the following statement in page a.html: there is such a php code in B. PHP: B. PHP file, and. the output of the PHP file is executed as a JS statement. Therefore, a

Cat aa.txt | grep 'startup' | wc-l is available in linux Command lines. But the exec in php has a problem, which is strange. Result: The following error message is displayed: cat: write error: Broken pipe has been exhausted. After checking a lot of

QuestionFirst, give a php sample code. If you fully understand why the following results appear, you do not need to waste time on this blog, this is to let php beginners pay attention to possible mistakes. [Php] Var_dump ("abcdefg" = "0"); // bool

Many websites now use the asynchronous loading technology. Most of the loaded data formats are json (for example, {"order": "205", "205 ": "\ u81ea \ u9009 \ u80a1"}). The following describes several methods for converting php Data to json output

I generally don't need to use php reference symbols when writing code. First of all, I don't know much about its usage. The C language is used to obtain the address, but PHP may be somewhat different, it is said to be a copy of the variable, that is,

Project Group Overview:Project grouping is an important mechanism of ThinkPHP. The project grouping function can combine multiple projects in the past into one project group, which can be reused for public files, each group can have its own

Mysql database operations [Php] /*** Db. class. php create databse object** @ Author Dick 417@668x.net* @ Copyright http://blog.csdn.net/haibrother***/ Class Dick_Db {Public $ db_host = ''; // host addressPublic $ db_username = ''; // database

In the initial stage, we only need to download one core package. We cannot use the extension package for the moment. We will download it later. The downloaded and decompressed ThinkPHP folder is placed in the root directory of the project we created.

Object link ingAfter the M method quickly instantiates the model, the object directly calls the field and assigns a value. You can directly call the add method to add a new value. directly call the find method parameter to set the value of the

I. php Automatic Loading Method   Use require, include, require_once, and include_once for manual loading. Use _ autoload for automatic loadingUse spl autoload for automatic loadingImplementation of manual loading: When there are few files to load,

PHP recursive algorithm code: Copy the Code as follows:// Define the angle value of PI ("PII", M_PI/180 );// Create an image resource and set the background to white. The foreground color to black.$ Im = imagecreate (670,500 );$ White =

The use of a few character functions such as mb_substr is not very easy to use, or this is more useful. [Php]/*** Truncation function to prevent garbled characters***/Function z_substr ($ sourcestr = '', $ I = 0, $ cutlength = 150, $ endstr = ''){$

/***=== Note ====Permission ModifierRole: describes the permissions of attributes and methods.Before attribute/MethodThere are 3 permission modifiers in totalPrivate, the strictest protectionProtected by protectedPublic, the most loose

We all know the language of website construction, because PHP website construction is everywhere. Today weJinan website productionHttp://www.jnwebseo.com to talk about how to use PHP custom error handler, the following code directly. Function

Insertion Sort is a stable, simple, and intuitive sorting algorithm. The principle of insert sorting is to build an ordered sequence. For unordered data, scan the sequence from the back to the front to locate the appropriate position and insert it.

How can we determine that two arrays are equal? In fact, it is very simple. You can use = OR =. The php manual describes the following, Example name result$ A + $ B join $ a and $ B.$ A = $ B is equal. If $ a and $ B have the same key/value pair,