The following is an example of a PHP dynamically generated function. The eval function is used in the example. I feel that it is very dangerous if the server allows users to run such a function
Copy code The code is as follows:
$a['a']=1;
$a['b']=1;
$a['c']=1;
$str="function a(){global $a;if($a['a']= =1 && $a['b']==1 && $a['c']==1){return 'OK';}else{return 'ERR';}}";
eval($str );
if(a()=="OK"){
echo "GOOD";
}else{
echo "OH NO";
}
http://www.bkjia.com/PHPjc/744326.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/744326.htmlTechArticleThe following is an example of a PHP dynamically generated function. The eval function is used in the example. I feel that if the server allows users to run this The function is very dangerous to copy the code. The code is as follows: ?...
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