PHP Chinese character verification code program_PHP tutorial-PHP Tutorial-php.cn

PHP Chinese character verification code program_PHP tutorial

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Release： 2016-07-13 17:10:19

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This article uses three files to briefly talk about how to apply Chinese verification codes in PHP. Because Chinese characters may appear garbled, we have defined a file to handle them specifically. Friends in need can refer to it. .

The code is as follows

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/*
* File: chinesechar.php
* Function: Chinese character data storage
*/
$ChineseChar = array("人","出","来","友","学","filial piety","benevolence","righteousness","property","honesty","loyalty"," "Guo", "Zhong", "Yi", "White", "Zhe", "Fire", "Earth", "Gold", "Wood", "Thunder", "Wind", "Dragon", "Tiger" ,"Heaven","Earth", "生"," faint","vegetable","bird","field","three","hundred","money","blessing","love"," "love", "beast", "worm", "fish", "nine", "net", "new", "degree", "ah", "ala", "ah", "oh", "yi" , "老", "小", "日", "月", "星");
?>

/*
* File: check.php
* Function: Verification

*/
session_start();
$errorMSG = '';
//Verify whether the user input is consistent with the verification code
if(!is_null($_POST['check']))
{
If (strcasecmp($_SESSION['code'],$_POST['code'])==0)
$errorMSG = "

Verification successful!

";
$errorMSG = "

Verification failed!

";
}
?>

if($errorMSG){
echo $errorMSG;
}
?>

/*
* File:code.php
* Function: Verification code generation

* Special note: Directed by Toothless Grass. All rights reserved. Please indicate the source when reprinting! Only by giving will you gain!
*/
include_once("chinesechar.php");
session_start();
// Set content-type
header("Content-type: image/png");
//Create image
$im = imagecreatetruecolor(120, 30);

//Create color

$fontcolor = imagecolorallocate($im, 255, 255, 255);
$bg = imagecolorallocate($im, 0, 0, 0);

//Set text
for($i=0;$i<4;$i++) $text .= $ChineseChar[(array_rand($ChineseChar))];

$_SESSION['code'] = $text;
// Set font
$font = 'simkai.ttf';

//Add text
imagettftext($im, 18, 0, 11, 21, $fontcolor, $font, iconv("GB2312","UTF-8",$text));

//Output image
imagepng($im);
imagedestroy($im);
?>

If you want to change the above program to English numbers, just change the Chinese array in chinesechar.php to numbers or letters and it will be KO.