php应用路径变量问题总结

原创: 2016-06-13 11:30:47 975浏览

本地服务器，域名http://d.com，根路径D:\phpnow\vhosts\d.com.yii，相对根目录拥有文件/x.php代码里requeir_once /a/a.php，而/a/a.php又requeir_once /a/b/b.php

/x.php

$_SERVER["HTTP_HOST"]：【d.com】//当前请求的 Host:即域名信信息

$_SERVER["PHP_SELF"]：【】//
$_SERVER["SCRIPT_NAME"]：【/x.php】//
$_SERVER["SCRIPT_FILENAME"]：【D:/phpnow/vhosts/d.com.yii/x.php】//。
__FILE__ ：【】//。

$_SERVER["REQUEST_URI"]：【/x.php/x/y/z.html?a=b&c=d】//url请求中包括/和之后的所有内容。
$_SERVER["QUERY_STRING"]：【a=b&c=d】//url请求中?之后的内容。

$_SERVER["DOCUMENT_ROOT"]：【D:/phpnow/vhosts/d.com.yii】//文档根目录。在服务器配置文件中定义

basename($_SERVER["PHP_SELF"])：【】//的
basename($_SERVER["SCRIPT_NAME"])：【x.php】//的
basename($_SERVER["SCRIPT_FILENAME"])：【x.php】//的
basename(__FILE__)：【】//的

dirname($_SERVER["PHP_SELF"])：【】//的
dirname($_SERVER["SCRIPT_NAME"])：【\】//的
dirname($_SERVER["SCRIPT_FILENAME"])：【D:/phpnow/vhosts/d.com.yii】//的
dirname(__FILE__)：【】//的

require_once /a/a.php

/a/a.php

$_SERVER["HTTP_HOST"]：【d.com】//当前请求的 Host:即域名信信息

$_SERVER["PHP_SELF"]：【】//
$_SERVER["SCRIPT_NAME"]：【/a/a.php】//
$_SERVER["SCRIPT_FILENAME"]：【D:/phpnow/vhosts/d.com.yii/a/a.php】//。
__FILE__ ：【】//。

$_SERVER["REQUEST_URI"]：【/a/a.php/x/y/z.html?a=b&c=d】//url请求中包括/和之后的所有内容。
$_SERVER["QUERY_STRING"]：【a=b&c=d】//url请求中?之后的内容。

$_SERVER["DOCUMENT_ROOT"]：【D:/phpnow/vhosts/d.com.yii】//文档根目录。在服务器配置文件中定义

basename($_SERVER["PHP_SELF"])：【】//的
basename($_SERVER["SCRIPT_NAME"])：【a.php】//的
basename($_SERVER["SCRIPT_FILENAME"])：【a.php】//的
basename(__FILE__)：【】//的

dirname($_SERVER["PHP_SELF"])：【】//的
dirname($_SERVER["SCRIPT_NAME"])：【/a】//的
dirname($_SERVER["SCRIPT_FILENAME"])：【D:/phpnow/vhosts/d.com.yii/a】//的
dirname(__FILE__)：【】//的

require_once /a/b/b.php

/x.php

 "
/x.php
" '$_SERVER["HTTP_HOST"]：【',['HTTP_HOST'],"】//当前请求的 Host:即域名信信息","
" '
' '$_SERVER["PHP_SELF"]：【',['PHP_SELF'],"】//请求执行文件的相对地址","
" '$_SERVER["SCRIPT_NAME"]：【',['SCRIPT_NAME'],"】//实际执行文件相对地址","
" '$_SERVER["SCRIPT_FILENAME"]：【',['SCRIPT_FILENAME'],"】//实际执行文件的绝对路径。","
" '__FILE__ ：【', ,"】//实际执行代码的绝对路径。","
" '
' '$_SERVER["REQUEST_URI"]：【',['REQUEST_URI'],"】//url请求中包括/和之后的所有内容。","
" '$_SERVER["QUERY_STRING"]：【',['QUERY_STRING'],"】//url请求中?之后的内容。","
" '
' '$_SERVER["DOCUMENT_ROOT"]：【',['DOCUMENT_ROOT'],"】//文档根目录。在服务器配置文件中定义","
" "
" 'basename($_SERVER["PHP_SELF"])：【',(['PHP_SELF']),"】//请求执行文件的的文件名","
" 'basename($_SERVER["SCRIPT_NAME"])：【',(['SCRIPT_NAME']),"】//实际执行文件的文件名","
" 'basename($_SERVER["SCRIPT_FILENAME"])：【',(['SCRIPT_FILENAME']),"】//实际执行文件的文件名","
" 'basename(__FILE__)：【',(),"】//实际执行代码的文件名","
"";
 "
" 'dirname($_SERVER["PHP_SELF"])：【',(['PHP_SELF']),"】//请求执行文件的的所在目录","
" 'dirname($_SERVER["SCRIPT_NAME"])：【',(['SCRIPT_NAME']),"】//实际执行文件的所在目录","
" 'dirname($_SERVER["SCRIPT_FILENAME"])：【',(['SCRIPT_FILENAME']),"】//实际执行文件的所在目录","
" 'dirname(__FILE__)：【',(),"】//实际执行代码的所在目录","
"";
 "
" "require_once "("a/a.php");

/a/a.php

 "/a/a.php
" '$_SERVER["HTTP_HOST"]：【',['HTTP_HOST'],"】//当前请求的 Host:即域名信信息","
" '
' '$_SERVER["PHP_SELF"]：【',['PHP_SELF'],"】//请求执行文件的相对地址","
" '$_SERVER["SCRIPT_NAME"]：【',['SCRIPT_NAME'],"】//实际执行文件相对地址","
" '$_SERVER["SCRIPT_FILENAME"]：【',['SCRIPT_FILENAME'],"】//实际执行文件的绝对路径。","
" '__FILE__ ：【', ,"】//实际执行代码的绝对路径。","
" '
' '$_SERVER["REQUEST_URI"]：【',['REQUEST_URI'],"】//url请求中包括/和之后的所有内容。","
" '$_SERVER["QUERY_STRING"]：【',['QUERY_STRING'],"】//url请求中?之后的内容。","
" '
' '$_SERVER["DOCUMENT_ROOT"]：【',['DOCUMENT_ROOT'],"】//文档根目录。在服务器配置文件中定义","
" "
" 'basename($_SERVER["PHP_SELF"])：【',(['PHP_SELF']),"】//请求执行文件的的文件名","
" 'basename($_SERVER["SCRIPT_NAME"])：【',(['SCRIPT_NAME']),"】//实际执行文件的文件名","
" 'basename($_SERVER["SCRIPT_FILENAME"])：【',(['SCRIPT_FILENAME']),"】//实际执行文件的文件名","
" 'basename(__FILE__)：【',(),"】//实际执行代码的文件名","
"";
 "
" 'dirname($_SERVER["PHP_SELF"])：【',(['PHP_SELF']),"】//请求执行文件的的所在目录","
" 'dirname($_SERVER["SCRIPT_NAME"])：【',(['SCRIPT_NAME']),"】//实际执行文件的所在目录","
" 'dirname($_SERVER["SCRIPT_FILENAME"])：【',(['SCRIPT_FILENAME']),"】//实际执行文件的所在目录","
" 'dirname(__FILE__)：【',(),"】//实际执行代码的所在目录","
"";
 "
" "require_once "("b/b.php");

/a/b/php

 "/a/b/b.php
" '$_SERVER["HTTP_HOST"]：【',['HTTP_HOST'],"】//当前请求的 Host:即域名信信息","
" '
' '$_SERVER["PHP_SELF"]：【',['PHP_SELF'],"】//请求执行文件的相对地址","
" '$_SERVER["SCRIPT_NAME"]：【',['SCRIPT_NAME'],"】//实际执行文件相对地址","
" '$_SERVER["SCRIPT_FILENAME"]：【',['SCRIPT_FILENAME'],"】//实际执行文件的绝对路径。","
" '__FILE__ ：【', ,"】//实际执行代码的绝对路径。","
" '
' '$_SERVER["REQUEST_URI"]：【',['REQUEST_URI'],"】//url请求中包括/和之后的所有内容。","
" '$_SERVER["QUERY_STRING"]：【',['QUERY_STRING'],"】//url请求中?之后的内容。","
" '
' '$_SERVER["DOCUMENT_ROOT"]：【',['DOCUMENT_ROOT'],"】//文档根目录。在服务器配置文件中定义","
" "
" 'basename($_SERVER["PHP_SELF"])：【',(['PHP_SELF']),"】//请求执行文件的的文件名","
" 'basename($_SERVER["SCRIPT_NAME"])：【',(['SCRIPT_NAME']),"】//实际执行文件的文件名","
" 'basename($_SERVER["SCRIPT_FILENAME"])：【',(['SCRIPT_FILENAME']),"】//实际执行文件的文件名","
" 'basename(__FILE__)：【',(),"】//实际执行代码的文件名","
"";
 "
" 'dirname($_SERVER["PHP_SELF"])：【',(['PHP_SELF']),"】//请求执行文件的的所在目录","
" 'dirname($_SERVER["SCRIPT_NAME"])：【',(['SCRIPT_NAME']),"】//实际执行文件的所在目录","
" 'dirname($_SERVER["SCRIPT_FILENAME"])：【',(['SCRIPT_FILENAME']),"】//实际执行文件的所在目录","
" 'dirname(__FILE__)：【',(),"】//实际执行代码的所在目录","
"";
 "
";