課程
/后端開(kāi)發(fā)
/PHP
/手把手教你實(shí)現(xiàn)電商網(wǎng)站后臺(tái)開(kāi)發(fā)
為什么我的驗(yàn)證碼顯示的是亂碼？
2016-12-03
源自：手把手教你實(shí)現(xiàn)電商網(wǎng)站后臺(tái)開(kāi)發(fā) 2-1
正在回答
建議檢查下你每個(gè)參數(shù)的拼寫，我上次是因?yàn)閏ontent-tpye拼錯(cuò)了導(dǎo)致的亂碼，你可能也哪里拼錯(cuò)了
wwwing
看看我的這個(gè)怎么樣
function verifyImage($type = 1,$length = 4,$pixel = 0,$line = 0,$sess_name = "verify"){
? ? //通過(guò)GD庫(kù)做驗(yàn)證碼
? ? //創(chuàng)建畫(huà)布
? ? $width = 80;
? ? $height = 28;
? ? $image = imagecreatetruecolor($width, $height);
? ? //創(chuàng)建顏色
? ? $white = imagecolorallocate($image, 255, 255, 255);
? ? $black = imagecolorallocate($image, 0, 0, 0);
? ? //用填充矩形填充畫(huà)布
? ? imagefilledrectangle($image, 1, 1, $width-2, $height-2, $white);
? ? $chars = buildRandomString($type,$length);
? ? $_SESSION[$sess_name] = $chars;
? ? //存放字體我文件
? ? $fontfiles = array("MSYH.TTC","SIMYOU.TTF");
? ? for ($i = 0; $i < $length; $i++){
? ? ? ? $size = mt_rand(14, 18);
? ? ? ? $angle = mt_rand(-15, 15);
? ? ? ? $x = 5 + $i*$size;
? ? ? ? $y = mt_rand(20, 26);
? ? ? ? $fontfile = "../fonts/".$fontfiles[mt_rand(0, count($fontfiles)-1)];
? ? ? ? $color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
? ? ? ? $text = substr($chars, $i, 1);
? ? ? ? imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
? ? }
? ? if ($pixel){
? ? ? ? for ($i = 0; $i < $pixel; $i++){
? ? ? ? ? ? imagesetpixel($image, mt_rand(0, $width-1), mt_rand(0, $height-1), $black);
? ? ? ? }
? ? if ($line){
? ? ? ? for ($i = 0; $i < $line; $i++){
? ? ? ? ? ? $color = imagecolorallocate($image, mt_rand(100, 200), mt_rand(80, 200), mt_rand(100, 180));
? ? ? ? ? ? imageline($image, mt_rand(0, $width-1), mt_rand(0, $height-1), mt_rand(0, $width-1), mt_rand(0, $height-1), $color);
? ? header("content-type: image/gif");
? ? //顯示畫(huà)布
? ? imagegif($image);
? ? //銷毀資源
? ? imagedestroy($image);
}
/**
?* 生成驗(yàn)證碼
?* @param int $type
?* @param int $length
?* @return string
?*/
function buildRandomString($type=1,$length=4){
if ($type == 1) {
$chars = join ( "", range ( 0, 9 ) );
} elseif ($type == 2) {
$chars = join ( "", array_merge ( range ( "a", "z" ), range ( "A", "Z" ) ) );
} elseif ($type == 3) {
$chars = join ( "", array_merge ( range ( "a", "z" ), range ( "A", "Z" ), range ( 0, 9 ) ) );
if ($length > strlen ( $chars )) {
exit ( "字符串長(zhǎng)度不夠" );
$chars = str_shuffle ( $chars );
return substr ( $chars, 0, $length );
舉報(bào)
手把手教你用PHP搭建電子商務(wù)平臺(tái)，由淺入深教你搭建電商系統(tǒng)
Copyright ? 2025 imooc.com All Rights Reserved | 京ICP備12003892號(hào)-11 京公網(wǎng)安備11010802030151號(hào)
購(gòu)課補(bǔ)貼聯(lián)系客服咨詢優(yōu)惠詳情
慕課網(wǎng)APP您的移動(dòng)學(xué)習(xí)伙伴
掃描二維碼關(guān)注慕課網(wǎng)微信公眾號(hào)
2017-03-07
建議檢查下你每個(gè)參數(shù)的拼寫，我上次是因?yàn)閏ontent-tpye拼錯(cuò)了導(dǎo)致的亂碼，你可能也哪里拼錯(cuò)了
2016-12-03
看看我的這個(gè)怎么樣
function verifyImage($type = 1,$length = 4,$pixel = 0,$line = 0,$sess_name = "verify"){
? ? //通過(guò)GD庫(kù)做驗(yàn)證碼
? ? //創(chuàng)建畫(huà)布
? ? $width = 80;
? ? $height = 28;
? ? $image = imagecreatetruecolor($width, $height);
? ? //創(chuàng)建顏色
? ? $white = imagecolorallocate($image, 255, 255, 255);
? ? $black = imagecolorallocate($image, 0, 0, 0);
? ? //用填充矩形填充畫(huà)布
? ? imagefilledrectangle($image, 1, 1, $width-2, $height-2, $white);
? ? $chars = buildRandomString($type,$length);
? ? $_SESSION[$sess_name] = $chars;
? ? //存放字體我文件
? ? $fontfiles = array("MSYH.TTC","SIMYOU.TTF");
? ? for ($i = 0; $i < $length; $i++){
? ? ? ? $size = mt_rand(14, 18);
? ? ? ? $angle = mt_rand(-15, 15);
? ? ? ? $x = 5 + $i*$size;
? ? ? ? $y = mt_rand(20, 26);
? ? ? ? $fontfile = "../fonts/".$fontfiles[mt_rand(0, count($fontfiles)-1)];
? ? ? ? $color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
? ? ? ? $text = substr($chars, $i, 1);
? ? ? ? imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
? ? }
? ? if ($pixel){
? ? ? ? for ($i = 0; $i < $pixel; $i++){
? ? ? ? ? ? imagesetpixel($image, mt_rand(0, $width-1), mt_rand(0, $height-1), $black);
? ? ? ? }
? ? }
? ? if ($line){
? ? ? ? for ($i = 0; $i < $line; $i++){
? ? ? ? ? ? $color = imagecolorallocate($image, mt_rand(100, 200), mt_rand(80, 200), mt_rand(100, 180));
? ? ? ? ? ? imageline($image, mt_rand(0, $width-1), mt_rand(0, $height-1), mt_rand(0, $width-1), mt_rand(0, $height-1), $color);
? ? ? ? }
? ? }
? ? header("content-type: image/gif");
? ? //顯示畫(huà)布
? ? imagegif($image);
? ? //銷毀資源
? ? imagedestroy($image);
}
/**
?* 生成驗(yàn)證碼
?* @param int $type
?* @param int $length
?* @return string
?*/
function buildRandomString($type=1,$length=4){
if ($type == 1) {
$chars = join ( "", range ( 0, 9 ) );
} elseif ($type == 2) {
$chars = join ( "", array_merge ( range ( "a", "z" ), range ( "A", "Z" ) ) );
} elseif ($type == 3) {
$chars = join ( "", array_merge ( range ( "a", "z" ), range ( "A", "Z" ), range ( 0, 9 ) ) );
}
if ($length > strlen ( $chars )) {
exit ( "字符串長(zhǎng)度不夠" );
}
$chars = str_shuffle ( $chars );
return substr ( $chars, 0, $length );
}