PHP Lecture 1 - String, Constants, Arrays, Operators

1. WEB DEVELOPMENT

2. PHP
PRESENTATORS
MD. AL-MAMUN SARKAR

3. PHP
String
Constants
1
2
Arrays3
Operators4

4. String
str_word_count("Hello world!")2
strrev("Hello world!")3
str_replace("world", "Dolly", "Hello world!")4
strpos("Hello world!", "world")5
strlen("Hello world!")1

5. Constant
define(name, value, case-insensitive)
2

6. Operators
Assignment operators2
Comparison operators3
Increment/Decrement operators4
Logical operators5
Arithmetic operators1
String operators6

7. Arithmetic operators

8. Assignment operators

9. Comparison operators

10. Increment/Decrement

11. Logical operators

12. String operators

13. Array
• Indexed arrays - Arrays with a numeric index
• Associative arrays - Arrays with named keys
• Multidimensional arrays - Arrays containing one or more arrays

14. Array function
• sort() - sort arrays in ascending order
• rsort() - sort arrays in descending order
• asort() - sort associative arrays in ascending order, according to the value
• ksort() - sort associative arrays in ascending order, according to the key
• arsort() - sort associative arrays in descending order, according to the value
• krsort() - sort associative arrays in descending order, according to the key

15. Superglobals
• $GLOBALS
• $_SERVER
• $_REQUEST
• $_POST
• $_GET
• $_FILES
• $_ENV
• $_COOKIE
• $_SESSION

16. QUESTION
?

17. THANK
YOU