{"id":1467,"date":"2020-06-21T14:22:29","date_gmt":"2020-06-21T06:22:29","guid":{"rendered":"http:\/\/admin.evshou.com\/?p=1467"},"modified":"2020-08-07T16:26:23","modified_gmt":"2020-08-07T08:26:23","slug":"php%e5%85%a5%e9%97%a8%e5%88%b0%e7%b2%be%e9%80%9a%ef%bc%9a%e7%ac%ac%e4%b8%89%e7%ab%a0%e5%9f%ba%e7%a1%80%e8%af%be%e7%a8%8b%e4%b8%8b","status":"publish","type":"post","link":"https:\/\/www.9713job.com\/?p=1467","title":{"rendered":"PHP\u5165\u95e8\u5230\u7cbe\u901a\uff1a\u7b2c\u4e09\u7ae0\u57fa\u7840\u8bfe\u7a0b\u4e0b"},"content":{"rendered":"

PHP\u5165\u95e8\u5230\u7cbe\u901a\uff1a\u7b2c\u4e09\u7ae0\u57fa\u7840\u8bfe\u7a0b\u4e0b<\/h3>\n

\u7b2c\u4e00\u8282\uff1a\u4f1a\u8bdd\u63a7\u5236<\/p>\n

\u672c\u5730\u5b58\u50a8\uff1a
\n\u8bbe\u7f6ecookie
\nsetcookie(‘name’,’zhangsan’,time()+60,’\/’);
\n\u9500\u6bc1cookie
\nsetcookie(‘name’,”,time()-1,’\/’);<\/p>\n

\u672c\u5730\u9a8c\u8bc1\u767b\u5f55\uff1a
\n$username=’admin’;
\n$password=’admin888′;
\nif($username==$_GET[‘username’]&&$password==$_GET[‘password’]){
\nsetcookie(‘name’,$username,time()+60*60*24*7,’\/’);
\necho ‘\u767b\u9646\u6210\u529f’;
\n}else{
\necho ‘\u767b\u5f55\u5931\u8d25’;
\n}<\/p>\n

\u670d\u52a1\u7aef\u5b58\u50a8\uff1a<\/p>\n

session_start(); \u60f3\u7528session\u5fc5\u987b\u5f00\u542f
\n$_SESSION[‘username’]=’admin’;
\nunset($_SESSION[‘username’]);\/\/\u9500\u6bc1
\n$session_destroy();\/\/\u91ca\u653e<\/p>\n

\u670d\u52a1\u7aef\u63d0\u53d6\uff1a
\nsession_start();
\necho $_SESSION[‘username’];<\/p>\n

\u670d\u52a1\u7aef\u767b\u5f55\uff0c\u6a21\u62df\u901a\u8fc7\u6570\u636e\u5e93\u67e5\u8be2\u8fc7\u6765\u7684\u6570\u636e
\nsession_start();
\n$username=$_GET[‘username’];
\n$password=$_GET[‘password’];
\nif($username==’admin’&&$password==’admin888′){
\necho ‘\u767b\u9646\u6210\u529f’;
\n$_SESSION[‘username’]=$username;
\n}else{
\necho ‘\u767b\u5f55\u5931\u8d25’;
\n}<\/p>\n

\u9a8c\u8bc1\u767b\u5f55\uff1a
\nsession_start();
\nif(empty($_SESSION[‘username’])){
\nexit(‘\u4f60\u6ca1\u6709\u767b\u5f55’);
\n}else{
\necho ‘\u6b22\u8fce\u4f60’.$_SESSION[‘username’];
\n}<\/p>\n

\u6ce8\u9500\uff1a
\nsession_start();
\nunset($_SESSION[‘username’]);
\nsession_destroy();
\n
\n\u7b2c\u4e8c\u8282\uff1aGD\u5e93<\/p>\n

\u66f4\u591a\u51fd\u6570\u8bf7\u53c2\u8003\u624b\u518c\uff0c\u70b9\u51fb\u76f4\u8fbe<\/a><\/p>\n

[\u56fe\u50cf\u5904\u7406\u51fd\u6570]<\/p>\n

1.\u521b\u5efa\u753b\u5e03
\n$image=imagecreatetruecolor(\u5bbd,\u9ad8);<\/p>\n

2.\u521b\u5efa\u989c\u8272
\n$red=imagecolorallocate($image,255,0,0);
\n$green=imagecolorallocate($image,0,255,0);
\n$blue=imagecolorallocate($image,0,0,255);<\/p>\n

3.\u7528GD\u5e93\u51fd\u6570\u53bb\u753b
\nimageline(\u8d44\u6e90,x,y,\u5bbd,\u9ad8,\u989c\u8272);
\nimageline($image,0,0,600,600,$red);\/\/\u7ebf
\nimagefilledrectangle($image,10,10,40,40,$green);\/\/\u77e9\u5f62
\nimageellipse($image,50,50,100,100,100,$blue);\/\/\u692d\u5706<\/p>\n

4.\u544a\u8bc9\u6d4f\u89c8\u5668mime\u7c7b\u578b
\nheader(“Content-type:image\/png”);<\/p>\n

5.\u8f93\u51fa\u5230\u6d4f\u89c8\u5668\u6216\u8005\u5b58\u653e\u5230\u672c\u5730
\nimagepng($image,’\u8def\u5f84’);<\/p>\n

6.\u9500\u6bc1\u8d44\u6e90
\nimagedestroy($image);<\/p>\n

\u5173\u4e8egd\u7684\u76f8\u5173\u51fd\u6570
\nimagecreatetruecolor\/\/\u521b\u5efa\u753b\u5e03
\nimagecolorallocate\/\/\u4e3a\u4e00\u5e45\u56fe\u50cf\u5206\u914d\u989c\u8272
\nimagefill\/\/\u586b\u5145
\nimageline \/\/\u753b\u7ebf<\/p>\n

\u8f93\u51fa\uff1a
\nimagepng(\u8d44\u6e90,’\u8def\u5f84\u6587\u4ef6\u540d’);
\nimagejpeg
\nimagegif<\/p>\n

\u5f62\u72b6\uff1a
\niamgerectangle \u77e9\u5f62
\nimagefilledrectangle \u753b\u4e00\u4e2a\u77e9\u5f62\u5e76\u4e14\u586b\u5145
\nimagefilledpolygon \u753b\u4e00\u4e2a\u591a\u8fb9\u5f62\u5e76\u4e14\u586b\u5145
\nimagefilledellipse \u753b\u4e00\u4e2a\u692d\u5706\u5e76\u4e14\u586b\u5145
\nimagefilleddarc \u753b\u997c\u72b6\u56fe
\nimagesetpixel \u753b\u50cf\u7d20
\nimagepolygon \u753b\u591a\u8fb9\u5f62
\nimageellipse \u753b\u692d\u5706<\/p>\n

\u6253\u5f00\u56fe\u7247\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u56fe\u7247
\nimagecreatrfromjpeg\u56fe\u7247\u7c7b\u578b<\/p>\n

\u6ce8\u610f\uff1a\u544a\u8bc9\u6d4f\u89c8\u5668mime\u7c7b\u578b
\nheader(“Content-type:image\/png”);<\/p>\n

\u65cb\u8f6c
\nimagerotate<\/p>\n

\u5199\u5b57
\nimagestring \u6c34\u5e73 \u753b\u4e00\u884c\u5b57\u7b26\u4e32 \u4e0d\u80fd\u5199\u4e2d\u6587
\nimagechar\u00a0 \u753b\u4e00\u4e2a \u4e0d\u80fd\u4e2d\u6587
\nimagetftext\u00a0 \u53ef\u4ee5\u5199\u6c49\u5b57(\u8d44\u6e90,\u5b57\u4f53\u5927\u5c0f,\u89d2\u5ea6,\u5750\u6807x,\u5750\u6807y,\u989c\u8272,\u6837\u5f0f,\u5b57\u7b26\u4e32)<\/p>\n

\u62f7\u8d1d\u5e76\u4e14\u5408\u5e76
\nimagecopy
\nimagecopymerge(\u76ee\u6807\u56fe\u50cf,\u88ab\u62f7\u8d1d\u7684\u6e90\u56fe\u50cf,\u76ee\u6807\u56fe\u50cf\u5f00\u59cb x \u5750\u6807,\u76ee\u6807\u56fe\u50cf\u5f00\u59cb y \u5750\u6807,
\n\u62f7\u8d1d\u56fe\u50cf\u5f00\u59cb x \u5750\u6807,\u62f7\u8d1d\u56fe\u50cf\u5f00\u59cb y \u5750\u6807,\u62f7\u8d1d\u7684\u5bbd\u5ea6,\u62f7\u8d1d\u7684\u9ad8\u5ea6,\u900f\u660e\u5ea6 \u53d6\u503c 0-100 )<\/p>\n

imagecopyresampled(\u76ee\u6807\u56fe\u8c61,\u6e90\u56fe,\u76ee\u6807 X,\u76ee\u6807 y,\u6e90x,\u6e90y,\u76ee\u6807\u5bbd,\u76ee\u6807\u9ad8,\u6e90\u56fe\u5bbd,\u6e90\u56fe\u9ad8)<\/p>\n

\u83b7\u53d6\u56fe\u7247\u7684\u4fe1\u606f
\ngetimagesize(‘\u56fe\u7247\u8d44\u6e90’)<\/p>\n

<\/p>\n

\u7b2c\u4e09\u8282\uff1a\u5c01\u88c5\u9a8c\u8bc1\u7801\u51fd\u6570<\/p>\n

function verify(\u5bbd,\u9ad8,\u6570\u91cf,\u7c7b\u578b,){
\n\/\/1.\u51c6\u5907\u753b\u5e03
\n$image=imagecreatetruecolor(\u5bbd,\u9ad8);
\n\/\/2.\u751f\u6210\u989c\u8272<\/p>\n

\/\/3.\u7c7b\u578b
\nswitch(\u7c7b\u578b){
\ncase 1:
\n$str=’0123456789′;
\n$string=substr(str_shuffle($str),0,\u6570\u91cf);\/\/\u5b57\u7b26\u4e32\u622a\u53d6
\nbreak;
\ncase 2:
\n$arr=range(‘a’,’z’);
\nshuffle($arr);
\n$tmp=array_slice($arr,0,5);
\n$string=join(”,$tmp);
\nbreak;
\ncase 3:
\nbreak;
\n}
\n}<\/p>\n

function lightColor(){
\nreturn imagecolorallocate($image,mt_rand(130,255),\u989c\u82722,\u989c\u82723);
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"

PHP\u5165\u95e8\u5230\u7cbe\u901a\uff1a\u7b2c\u4e09\u7ae0\u57fa\u7840\u8bfe\u7a0b\u4e0b \u7b2c\u4e00\u8282\uff1a\u4f1a\u8bdd\u63a7\u5236 \u672c\u5730\u5b58\u50a8\uff1a \u8bbe\u7f6ecookie setcookie(&#8 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-1467","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/posts\/1467","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.9713job.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1467"}],"version-history":[{"count":8,"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/posts\/1467\/revisions"}],"predecessor-version":[{"id":1825,"href":"https:\/\/www.9713job.com\/index.php?rest_route=\/wp\/v2\/posts\/1467\/revisions\/1825"}],"wp:attachment":[{"href":"https:\/\/www.9713job.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1467"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.9713job.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1467"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.9713job.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}