php 解析 执行,php解析执行基础代码

静态变量虽然在函数结束时值不丢失，但其作用域只在本函数中，在函数之外仍然是无效的

如：function mytest(){

static $mystr;

$mystr.="哈";

echo $mystr."
";

}

echo mytest();//哈

echo mytest();//哈哈

echo mytest();//哈哈哈

$request=null;

is_null($request) && $request = "我是request";   <=等同于=> if(is_null($request)) $request = "我是request";

var_dump($request);

$script_name = basename($_SERVER['SCRIPT_FILENAME']);

if (basename($_SERVER['SCRIPT_NAME']) === $script_name) {

$url = $_SERVER['SCRIPT_NAME'];

echo 1;

} elseif (basename($_SERVER['PHP_SELF']) === $script_name) {

$url = $_SERVER['PHP_SELF'];

echo 2;

} elseif (isset($_SERVER['ORIG_SCRIPT_NAME']) && basename($_SERVER['ORIG_SCRIPT_NAME']) === $script_name) {

$url = $_SERVER['ORIG_SCRIPT_NAME'];

echo 3;

} elseif (($pos = strpos($_SERVER['PHP_SELF'], '/' . $script_name)) !== false) {

$url = substr($_SERVER['SCRIPT_NAME'], 0, $pos) . '/' . $script_name;

echo 4;

} elseif (isset($_SERVER['DOCUMENT_ROOT']) && strpos($_SERVER['SCRIPT_FILENAME'], $_SERVER['DOCUMENT_ROOT']) === 0) {

$url = str_replace('\', '/', str_replace($_SERVER['DOCUMENT_ROOT'], '', $_SERVER['SCRIPT_FILENAME']));

echo 5;

}

echo basename($_SERVER['SCRIPT_FILENAME'])."
";

echo basename($_SERVER['SCRIPT_NAME'])."
";

echo basename($_SERVER['PHP_SELF'])."
";

echo basename($_SERVER['ORIG_SCRIPT_NAME'])."
";

echo basename($_SERVER['DOCUMENT_ROOT'])."
";

$path_parts=pathinfo('/www/htdocs/inc/lib.inc.php');

echo$path_parts['dirname'],"n";

echo$path_parts['basename'],"n";

echo$path_parts['extension'],"n";

echo$path_parts['filename'],"n";// since PHP 5.2.0/www/htdocs/inc

lib.inc.php

php

lib.inc

public functionisSsl()

{$server=array_merge($_SERVER,$this->server);if(isset($server['HTTPS']) && ('1'==$server['HTTPS'] ||'on'==strtolower($server['HTTPS']))) {return true;

}elseif(isset($server['REQUEST_SCHEME']) &&'https'==$server['REQUEST_SCHEME']) {return true;

}elseif(isset($server['SERVER_PORT']) && ('443'==$server['SERVER_PORT'])) {return true;

}elseif(isset($server['HTTP_X_FORWARDED_PROTO']) &&'https'==$server['HTTP_X_FORWARDED_PROTO']) {return true;

}elseif(Config::get('https_agent_name') &&isset($server[Config::get('https_agent_name')])) {return true;

}return false;

}