PHP verification code function code (simple and practical)
Source: Internet
Author: User
This article mainly shares the simple verification code function implementation code in php. the code is short, but the effect is good. if you like it, try it:
The code is as follows:
/**
* The value of vCode (m, n, x, y) m is n-side width x-side height y.
* Micxp
* BitsCN.com
*/
Session_start ();
VCode (4, 15); // 4 digits. the display size is 15.
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