define ():
Define (< >, < >[,<>]);
<> true false. true, , false , .
<?php
Error_reporting (E_ALL);
Define (author1,);
Echo author1, <br>;
Echo AUTHOR1, <br> <br>;
Define (author2,, true);
Echo author2, <br>;
Echo AUTHOR2, <br><br>;
Define (author3, ,false);
Echo author3, <br>;
Echo AUTHOR3;
?>
PHP :
_FILE_ ( ) ;
_LINE_ ( ) , ;
PHP_OS ;
PHP_VERSION PHP;
<?php
Echo_FILE_.<br>;
Echo_LINE_.<br>;
Echo PHP_OS.<br>;
Echo PHP_VERSION.<br>
?>
- defined (< >).- true, :
Define (authore, , true);
If (defined(author))echo ;
Else echo ;
?>
PHP
, .
_LINE_
_FILE_
_FUNCTION_
_METHOD_
1. + - :
$Z=$X+$Y;
2. - - ³:
$Z = $X _$Y;
3. * - :
$Z=$X*$Y;
4. / - ij:
$Z = $X/$Y;
5.
$Z =$X%$Y;
6. ++
1
$Z++;
7. -- - $Z--; // $Z=$Z -1;
:
$Z++; $Z--;//
++$Z;--$Z;//
($Z++) (++$Z)- .
..
1. ~ -
$Z=~$X;
2. & -
$Z=$X&$Y;
3. | -
$Z=$X | $Y;
4. ^ -
$Z = $X^$Y;
5. << - -
$Z=$X<<$Y;
6. >> -
$Z=$X>>$Y.
|
|
. () , :
$Z=1.2;
// $Z 12
:
1. ++, -- - ,
2. *, /, % -
3. +, -
PHP
1.
2. ifelse
3.
4. ?
5.
6. switch
7. switch ifelse
1. :
== -
=== -
!= -
!==
<-
> -
<= -
>= -
:
!($Var1==$var2)
:
&& -
|| -
&& AND || - OR
AND
OR
:
($var1==$var2) AND ($var2!=$var3)
($var1==$var2) OR ($var2!=$var3)
if
.
:
If (zakaz ==0)
Echo !<br/>;
:
If (zakaz==0)
{
Echo <p style=color:red>;
Echo !<br/>;
Echo </p>;
}
3. ifelse
ifelse :
If (< >) {
<, , >
}]
[else]{
<, , >
}]
:
If (isset($_GET[name])){
Echo Hello,.$_GET[Name];
}
Else{
Echo <br>;
Echo <form action=.$_SERVER[SCRIPT_NAME].>;
Echo <input type = text name = name>;
Echo </form>;
}
4. switch
switch :
Switch (< >){
Case < 1>:
< 1>;
Break;
Case < 2>:
< 2>;
Break;
Default:
<>;
}