PHP

What if php plot does not show pictures? This article describes the causes and solutions for the inability to display images when using the gd Library in php. For more information, see.Php plotting. check whether the gd Library is

Php5 string processing function summary This article describes common character string processing functions in php5, including string comparison, string search, string truncation, and other functions. For more information, see.A summary of

Php configuration file modification Sample code $ Fp = fopen ("aaa. conf", 'r '); $ Configfile = fread ($ fp, filesize ("aaa. conf ")); Fclose ($ fp ); // Use regular expression replacement

How to select the appropriate programming language Now, programming is popular all over the world. Students of all ages and adults entering their jobs are increasingly encouraged to learn programming. There are countless teaching materials

Phpsprintf function usage php floating point number format Sprintf ("% 9.3f", 3.1415926); // right alignment: fill the number of digits with spaces. Result: "3.142" Sprintf ("%-9.3f", 3.1415926); // left

Php file export and download methods Header ("Content-Type: application/vnd. ms-excel ") If you want to provide the open/save dialog box, the Content-Disposition parameter and the Content-Disposition parameter

Batch import of php Data into csv files (example) /** Import csv files to the database in php *** * Calculate the program execution time simultaneously. ***/ // Define a time function

PHP line chart generation functions and examples /* * Generate a line chart in php * By bbs.it-home.org */ Function line_stats_pic ($ value_y, $ width, $ high, $ strong = 1, $ fix = 0 ){ // Y

Code example for preventing SQL injection by php Function inject_check ($ SQL _str ){ Return eregi ('select | insert | and | or | update | delete | \ '| \/\ * | \. \. \/| \. \/| union | into | load_file |

Php generates a random string with a specified number of digits (length) /** * Generate a string of the specified length * By bbs.it-home.org */ Function create_random_string ($ random_length ){

Example code of phpcurl spoofing IP address #! /Bin/awk-f # Before running BEGIN { FS = ""; Count = 0; } # Running { Iparr [count ++] = $0; } # After

How to forcibly display error information in PHP Error_reporting (E_ALL ); Ini_set ('display _ errors ', '1 '); // Output error information to a text file Ini_set ('error _ log', dirname (_

Php $ special variable (output variable string corresponding variable value) $ Var1 = 'nameofvariable '; $ NameOfVariable = 'This is the value I want! '; Echo $ var1; ?> Output

Example of php checking file read-only, writable, and executable permissions $ Myfile = "./test.txt "; If (is_readable ($ myfile )){ Echo "This file is readable. "," \ N "; } Else { Echo

Php package a group of files as a zip package class /** * Zip file creation class. * Makes zip files. * * @ Access public */ Class zipfile { /** * Array to store

Simple mysql tool implemented by php (execute multiple SQL statements) This article introduces a simple mysql tool implemented by php, which may execute multiple SQL statements. For more information, see.The code is as follows: ";

Two ways to set the time zone in php Date. timezone = PRC Set the time zone in the code Date_default_timezone_set ('Asia/Shanghai'); // 'Asia/Shanghai' Asia/Shanghai Date_default_timezone_set

Install redis and phpredis in centos6.4 $ Wget http://download.redis.io/releases/redis-2.6.16.tar.gz $ Tar xzf redis-2.6.16.tar.gz $ Redis-2.6.16 cd $ Make install 2. configuration

Php obtains the Google prvalue algorithm and php's prvalue query code. /* * Function: encode the URL * Parameter description: $ web_url URL, which does not contain "http: //", for example, jbxue.com */

PHP sample code for uploading multiple files and images $ Uptypes = array ( // The ContentType format of the uploaded file 'Image/jpg ', 'Image/jpeg ', 'Image/png ',