ASP / PHP Cross Reference

 

 

General syntax
ASP Comments, inline 'my dog has fleas	PHP Comments, inline //my dog has fleas
ASP Comments, block not available?	PHP Comments, block /*   The quick brown fox   jumped over the lazy dogs. */
ASP, Escaping quotes "" "var text1=""<img src=\""blank.gif\"">"";"	PHP, Escaping quotes \" or use ' like javascript 'var text1="<img src=\"blank.gif\">";';
ASP Command termination None, but only one command per line.	PHP Command termination Each command must end with ; but multiple commands per line are allowed.
ASP Screen output response.write "hello"	PHP Screen output echo "hello";
ASP Newline characters vbCrLf response.write "hello" & vbCrLf	PHP Newline characters "\n" (must be inside "", not '') echo "hello \n";
ASP Variable Names Not case sensitive, so fName is the same as FNAME	PHP Variable Names Case sensitive AND must begin with $ so $fName is NOT the same as $FNAME
String Functions
ASP String concatenation & fname=name1 & " " & name2 emsg=emsg & "error!"	PHP String concatenation . and .= $fname=$name1." ".$name2; $emsg.="error!";
ASP, Change case LCase(), UCase() lowerName=LCase(chatName) upperName=UCase(chatName)	PHP, Change case strtolower(), strtoupper() $lowerName=strtolower($chatName); $upperName=strtoupper($chatName);
ASP String length Len() n=Len(chatName)	PHP String length strlen() $n=strlen($chatName);
ASP, Trim whitespace Trim() temp=Trim(xpage)	PHP, Trim whitespace trim() and also ltrim(), rtrim() $temp=trim($xpage);
ASP String sections Left(), Right(), Mid() Left("abcdef",3) result = "abc" Right("abcdef",2) result = "ef" Mid("abcdef",3) result = "cdef" Mid("abcdef",2,4) result = "bcde"	PHP String sections substr() substr("abcdef",0,3); result = "abc" substr("abcdef",-2); result = "ef" substr("abcdef",2); result = "cdef" substr("abcdef",1,4); result = "bcde"
ASP String search forward, reverse Instr(), InstrRev() x=Instr("abcdef","de") x=4 x=InstrRev("alabama","a") x=7	PHP String search forward, reverse strpos(), strrpos() $x=strpos("abcdef","de"); x=3 $x=strrpos("alabama","a"); x=6
ASP String replace Replace(string exp,search,replace) temp=Replace(temp,"orange","apple") temp=Replace(temp,"'","\'") temp=Replace(temp,"""","\""")	PHP String replace str_replace(search,replace,string exp) $temp=str_replace("orange","apple",$temp); $temp=str_replace("'","\\'",$temp); $temp=str_replace("\"","\\\"",$temp);
ASP, split a string into an array Split() temp="cows,horses,chickens" farm=Split(temp,",",-1,1) x=farm(0)	PHP, split a string into an array explode() $temp="cows,horses,chickens"; $farm=explode(",",$temp); $x=$farm[0];
ASP, convert ASCII to String x=Chr(65) x="A"	PHP, convert ASCII to String $x=chr(65); x="A"
ASP, convert String to ASCII x=Asc("A") x=65	PHP, convert String to ASCII $x=ord("A") x=65
Control Structures
ASP, if statements if x=100 then x=x+5 elseif x<200 then x=x+2 else x=x+1 end if	PHP, if statements if ($x==100) { $x=$x+5; } else if ($x<200) { $x=$x+2; } else { $x++; }
ASP, for loops for x=0 to 100 step 2 if x>p then exit for next	PHP, for loops for ($x=0; $x<=100; $x+=2) { if ($x>$p) }
ASP, while loops do while x<100 x=x+1 if x>p then exit do loop	PHP, while loops while ($x<100) { $x++; if ($x>$p) }
ASP, branching select case chartName case "TopSales" theTitle="Best Sellers" theClass="S" case "TopSingles" theTitle="Singles Chart" theClass="S" case "TopAlbums" theTitle="Album Chart" theClass="A" case else theTitle="Not Found" end select	PHP, branching switch ($chartName) { case "TopSales": $theTitle="Best Sellers"; $theClass="S"; break; case "TopSingles": $theTitle="Singles Chart"; $theClass="S"; break; case "TopAlbums": $theTitle="Album Chart"; $theClass="A"; break; default: $theTitle="Not Found"; }
ASP functions Function myFunction(x) myFunction = x*16 'Return value End Function	PHP functions function myFunction($x) { return $x*16; //Return value }
HTTP Environment
ASP, Server variables Request.ServerVariables("SERVER_NAME") Request.ServerVariables("SCRIPT_NAME") Request.ServerVariables("HTTP_USER_AGENT") Request.ServerVariables("REMOTE_ADDR") Request.ServerVariables("HTTP_REFERER")	PHP, Server variables $_SERVER["HTTP_HOST"]; $_SERVER["PHP_SELF"]; $_SERVER["HTTP_USER_AGENT"]; $_SERVER["REMOTE_ADDR"]; @$_SERVER["HTTP_REFERER"]; @ = ignore errors
ASP Page redirects Response.redirect("wrong_link.htm")	PHP Page redirects header("Location: wrong_link.htm");
ASP, GET and POST variables Request.QueryString("chat") Request.Form("username")	PHP, GET and POST variables @$_GET["chat"];       @ = ignore errors @$_POST["username"];
ASP, prevent page caching Response.CacheControl="no-cache" Response.AddHeader "pragma","no-cache"	PHP, prevent page caching header("Cache-Control: no-store, no-cache"); header("Pragma: no-cache");
ASP, Limit script execution time, in seconds Server.ScriptTimeout(240)	PHP, Limit script execution time, in seconds set_time_limit(240);
ASP, Timing script execution s_t=timer ...ASP script to be timed... duration=timer-s_t response.write duration &" seconds"	PHP, Timing script execution $s_t=microtime(); ...PHP script to be timed... $duration=microtime_diff($s_t,microtime()); $duration=sprintf("%0.3f",$duration); echo $duration." seconds"; //required function function microtime_diff($a,$b) { list($a_dec,$a_sec)=explode(" ",$a); list($b_dec,$b_sec)=explode(" ",$b); return $b_sec-$a_sec+$b_dec-$a_dec; }
File System Functions
ASP, create a file system object (second line is wrapped) 'Required for all file system functions fileObj=Server.CreateObject  ("Scripting.FileSystemObject")	PHP, create a file system object Not necessary in PHP
ASP, check if a file exists pFile="data.txt" fileObj.FileExists(Server.MapPath(pFile))	PHP, check if a file exists $pFile="data.txt"; file_exists($pFile);
ASP, Read a text file pFile="data.txt" xPage=fileObj.GetFile(Server.MapPath(pFile)) xSize=xPage.Size 'Get size of file in bytes xPage=fileObj.OpenTextFile(Server.MapPath(pFile)) temp=xPage.Read(xSize) 'Read file linkPage.Close	PHP, Read a text file $pFile="data.txt"; $temp=file_get_contents($pFile); //Read file
Time and Date Functions
ASP, Server Time or Date Now, Date, Time	PHP, Server Time or Date date()
ASP, Date format (default) Now = 3/19/2007 8:13:10 AM Date = 3/19/2007 Time = 8:13:10 AM Various ASP functions extract date parts: Month(Date) = 3 MonthName(Month(Date)) = March Day(Date) = 19 WeekdayName(Weekday(Date)) = Monday WeekdayName(Weekday(Date),False) = Mon	PHP, Date format There is no default format in PHP. The date() function is formatted using codes: date("n/j/Y g:i:s A") = 3/19/2007 8:13:10 AM date("n") = 3 date("F") = March date("j") = 19 date("l") = Monday date("D") = Mon
Numeric Functions
ASP, convert decimal to integer Int() n=Int(x)	PHP, convert decimal to integer floor() $n=floor($x);
ASP, determine if a value is numeric IsNumeric() if IsNumeric(n) then ...	PHP, determine if a value is numeric is_numeric() if (is_numeric($num)) {...}
ASP, modulus function x mod y	PHP, modulus function $x % $