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