PHP is case sensitive
Yeah it is true that PHP is a case sensitive language. Try out following example:
<html>
<body>
<? $capital = 67;
print("Variable capital is $capital<br>");
print("Variable CaPiTaL is $CaPiTaL<br>");
?>
</body>
</html>
This will produce following result:
Variable capital is 67
Variable CaPiTaL is
Statements are expressions terminated by semicolons:
A statement in PHP is any expression that is followed by a semicolon (;).Any sequence of valid PHP statements that is enclosed by the PHP tags is a valid PHP program. Here is a typical statement in PHP, which in this case assigns a string of characters to a variable called $greeting:
$greeting = "Welcome to PHP!";
Expressions are combinations of tokens:
The smallest building blocks of PHP are the indivisible tokens, such as numbers (3.14159), strings (.two.), variables ($two), constants (TRUE), and the special words that make up the syntax of PHP itself like if, else, while, for and so forth
Braces make blocks:
Although statements cannot be combined like expressions, you can always put a sequence of statements anywhere a statement can go by enclosing them in a set of curly braces. Here both statements are equivalent:
if (3 == 2 + 1)
print("Good - I haven't totally lost my mind.<br>");
if (3 == 2 + 1)
{
print("Good - I haven't totally");
print("lost my mind.<br>");
}
Running PHP Script from Command Prompt:
Yes you can run your PHP script on your command prompt. Assuming you have following content in test.php file
<?
php echo "Hello PHP!!!!!";
?>
Now run this script as command prompt as follows:
$ php test.php
It will produce following result:
Hello PHP!!!!!
Hope now you have basic knowledge of PHP Syntax.
Yeah it is true that PHP is a case sensitive language. Try out following example:
<html>
<body>
<? $capital = 67;
print("Variable capital is $capital<br>");
print("Variable CaPiTaL is $CaPiTaL<br>");
?>
</body>
</html>
This will produce following result:
Variable capital is 67
Variable CaPiTaL is
Statements are expressions terminated by semicolons:
A statement in PHP is any expression that is followed by a semicolon (;).Any sequence of valid PHP statements that is enclosed by the PHP tags is a valid PHP program. Here is a typical statement in PHP, which in this case assigns a string of characters to a variable called $greeting:
$greeting = "Welcome to PHP!";
Expressions are combinations of tokens:
The smallest building blocks of PHP are the indivisible tokens, such as numbers (3.14159), strings (.two.), variables ($two), constants (TRUE), and the special words that make up the syntax of PHP itself like if, else, while, for and so forth
Braces make blocks:
Although statements cannot be combined like expressions, you can always put a sequence of statements anywhere a statement can go by enclosing them in a set of curly braces. Here both statements are equivalent:
if (3 == 2 + 1)
print("Good - I haven't totally lost my mind.<br>");
if (3 == 2 + 1)
{
print("Good - I haven't totally");
print("lost my mind.<br>");
}
Running PHP Script from Command Prompt:
Yes you can run your PHP script on your command prompt. Assuming you have following content in test.php file
<?
php echo "Hello PHP!!!!!";
?>
Now run this script as command prompt as follows:
$ php test.php
It will produce following result:
Hello PHP!!!!!
Hope now you have basic knowledge of PHP Syntax.
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