ASP (VBScript)

PHP (v4.3+)

ASP Comments, inline

'my dog has fleas

PHP Comments, inline

//my dog has fleas

ASP Comments, block


not available?

PHP Comments, block

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

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


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) {break;} }

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) {break;} }

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 }

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; 

}

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

ASP, Server Time or Date

Now, Date, Time


PHP, Server Time or Date

date()


ASP, Date format (default)

Now = 12/8/2007 11:29:27 AM
Date = 12/8/2007
Time = 11:29:27 AM

Various ASP functions extract date parts:

Month(Date) = 12
MonthName(Month(Date)) = December
Day(Date) = 8
WeekdayName(Weekday(Date)) = Saturday
WeekdayName(Weekday(Date),False) = Sat


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") = 12/8/2007 11:29:27 AM

date("n") = 12
date("F") = December
date("j") = 8
date("l") = Saturday
date("D") = Sat


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 % $y