PHP (Personal Home Page) - Day 4

Hello friends in my previous blogs

PHP (Personal Home Page) - Day 1
PHP (Personal Home Page) - Day 2
PHP (Personal Home Page) - Day 3

I already describe you about the basic concept of PHP and about its syntax, tags and its variables. Now I describe the some more programming approaches in PHP.

Data type - in php there are 6 basic and 2 special data types are present.

1. Integer
2. Float/double
3. String
4. Array
5. Boolean
6. Object
7. Null
8. Resource

How to identify the data type used in a program



Output



gettype() - it is used to identify data type of the variable.

String- any thing define within the single codes (‘ ’) and double codes (“ ”) is called string. By default string hold null value.



Output


Some string functions are

• Strlen();
• Strpos();
• Strtoupper();
• Strtolower();
• Strrev();
• Substr();
• Crypt();
• Ucfirst();
• Ucwords();
• Is_string();

Phpinfo(); Tag 

Output



This tag produce all the information about your system, server, configuration, environment etc.