of regular expression functions, each corresponding to a certain type of regular expression. You can use any of them based on your comfort[r]
Trang 4• Passing Form Data
– method (POST or GET)
• When to Use GET?
• When to Use POST?
• Compare GET vs POST
Trang 5• Passing data with forms
Trang 6• Regular expressions in PHP
Trang 7• Regular expressions are sequence or pattern of characters itself They provide the foundation for pattern-matching functionality
notation to describe patterns in strings
Trang 8• Using regular expression you can search
string, you can replace one string by another string and you can split a string into many chunks.
of regular expression functions, each corresponding to a certain type of regular expression You can use any of them based on your comfort.
POSIX Regular Expressions
8
Trang 9
|^[0-9]{2}-[0-9]{2}-[0-9]{4}$|
Start and end of RE
Sub pattern
Sub pattern
Sub pattern Start matching
of the string
Sub pattern with fixed character
[0-9]
{2}
Trang 10• Brackets
when used in the context of regular expressions They are used to find a range of characters.
• [0-9] It matches any decimal digit from 0
through 9.