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Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17593

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  11305

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Introduction：php random verification code php generates random verification code (graphic and text)

2016-07-25 comment 0  1236

Course Introduction：Detailed explanation of php random verification code image generation example

2016-07-25 comment 0  1056

Course Introduction：Detailed explanation of how PHP randomly generates image verification codes

2016-07-25 comment 0  961

Course Introduction：PHP realizes the generation and verification of image verification codes. In website development, in order to prevent malicious machine attacks or automatic registration, we often use image verification codes for verification. This article will introduce how to use PHP to generate and verify image verification codes, and give specific code examples. Generating an image verification code The key to generating an image verification code is to generate a random verification code string and draw it onto the image. The following is a sample code that generates an image verification code: <?phpsession_start();//

2023-09-13 comment 0  942

Course Introduction：PHP: Use the gd library to generate images and implement random verification codes

2016-10-10 comment 0  1214