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

/*
  The quick brown fox
  jumped over the lazy dogs.
*/

ASP, Escaping quotes

""

"var text1="" "";"

PHP, Escaping quotes

\" or use ` like javascript

`var text1=" ";`;

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 = 7/10/2007 4:35:06 AM
Date = 7/10/2007
Time = 4:35:06 AM

Various ASP functions extract date parts:

Month(Date) = 7
MonthName(Month(Date)) = July
Day(Date) = 10
WeekdayName(Weekday(Date)) = Tuesday
WeekdayName(Weekday(Date),False) = Tue


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") = 7/10/2007 4:35:06 AM

date("n") = 7
date("F") = July
date("j") = 10
date("l") = Tuesday
date("D") = Tue


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