PHP

Programmers who have written php + Mysql to convert PHP and MySQL date and time (UNIX timestamp and format date) know that there is a time difference, the UNIX timestamp and the formatting date are two time representation forms that we often deal

PhpMD5 encryption details Mysql> create table members ( -> Username CHAR (14) not null, -> Password CHAR (32) not null, -> Primary key (username) -> ); Then, we can enter user data to the table:

In PHP:,-& amp; gt;, self, $ this operator usage difference When accessing a member variable or method in a PHP class, if the referenced variable or method is declared as const (defining constant) or static (declaring static), the

Share php interview questions (blessed are my friends looking for work) $ Tmp = 0 = ""? 1: 2; Echo $ tmp; ?> Result 1: The int and string types are forcibly converted. The value 0 = ""0 = 0 must be

Code for converting a php multi-dimensional array to a string or a multi-dimensional array to a one-dimensional array /** * @ Method multi-dimensional array to string * @ Staticvar array $

Code example for php regular expression filtering, such as html tags, spaces, and line breaks /** Desc: regular filter html tags, spaces, line breaks, etc. Link: bbs.it-home.org Date: 2013/2/23

Conversion of textarea line breaks in php forms It takes a long time to debug the problem of converting line breaks in textarea into br and saving it to the database. 1. you must know that the linefeed in textarea is \ n (I found that the

Php code for reading and processing the file content to strings /* * Read the file content to the string, and remove line breaks and spaces at the beginning and end of the line. */ Header

Php code for capturing email addresses on webpages /** Desc: collect the email code on the webpage Link: bbs.it-home.org Date: */ $ Url = 'http: // bbs.it-home.org '; // This webpage

Examples of using line breaks and (n or rn and br) in php Echo 'hello'; Echo 'World! '; ?> Output: hellloworld!Example 2: Echo 'hello \ n'; // \ n for unix

Php code for filtering arrays by the first character $ Array = array ( 'Abcd ', 'ABCDE ', 'Bcde ', 'Cdef ', 'Defg ', 'Defgh' ); $ Str = '~ '. Implode ('~ ', $ Array ).'~

Special operators and functions commonly used in php Special Operator numbers and functions commonly used in php (including annotation symbols, common symbol escaping, operator numbers, value assignment operators, bit operations, logical

Example of returning an array with an infinitely recursive php class /** * Returns an array of recursive infinitely classified values. * Link: bbs.it-home.org * Date: 2013/2/21 */ $

Example of recursive summation of php arrays /** Desc: recursive summation of arrays Link: bbs.it-home.org Date: 2013/2/22 */ Function arraySumRecursive ($ array) { $ Total =

How to use the database configuration file in php Description: save the database username and password in the config file. in php, use include or require as needed, and use the global keyword in the function to compile the variables for

Learn how to use constants in php In php, a constant is a value that cannot be modified during program execution. When processing a value that never needs to be modified, you can consider setting it as a constant.In php, a constant is a

Php array function in_array () to find whether the specified value exists in the array $ People = array ("Peter", "Joe", "Glenn", "Cleveland "); If (in_array ("Glenn", $ people )) { Echo "Match

Understanding about recursive traversal of PHP arrays /** Desc: Array */ $ Arr = array ( "1" => 'test ', '2' => 'me ', Array ( "3" => "beij ", "4" => "zz" ), "45 ",

Small example of php recursive call /** * Delete special characters and tags from array elements */ Function delarraystr ($ array ){ If (is_array ($ array )){ Foreach ($ array as

Example of a php timestamp application The timestamp is a set of random numbers generated based on the current system time. Timestamp is generally used as a basis for determining data uniqueness.Assume that bank A and Bank B open your