C

1
Công ngh? LAMP

• Chuong 5 Qu?n lý d? li?u nh?p

Ph?m Minh Dung
2
N?i dung

• Nh?p d? li?u
• Qu?n lý d? li?u nh?p
• Bi?u th?c chính quy

3
Nh?p d? li?u

• lt?php
• //Handle Input here
• //Check if submit has a value of "Go" - The
  Validator
• if (_POST"submit" "Go")
• //The Processor
• echo("You wrote "._POST"you_wrote")
• echo("ltbrgtYou could have done whatever you want
• with the input instead")
• exit
• ?gt
• lt!-- The Frontend HTML form --gt
• ltform action"lt?php echo(PHP_SELF) ?gt"
  method"POST" gt
• ltpgtInput a word ltinput type"text" size"20"
  name"you_wrote"gt
• ltinput type"submit" name"submit"
  value"Go"gtlt/pgt
• lt/formgt

4
Nh?p d? li?u

• Forms attribute
• action file .php s? nh?n du?c d? li?u
• method
• GEThttp//localhost/input.php?you_wrotetesting2
  0this20scriptsubmitGo
• POSThttp//localhost/input.php

5
N?i dung

• Nh?p d? li?u
• Qu?n lý d? li?u nh?p
• Bi?u th?c chính quy

6
Qu?n lý d? li?u nh?p

• S? d?ng d? li?u t? FORM
• lt?php
• //Handle Input here
• //Check if submit has a value of "Go" - The
  Validator
• if (_POST"submit" "Go")
• //The Processor
• echo("You wrote "._POST"you_wrote")
• echo("ltbrgtYou could have done whatever you want
• with the input instead")
• exit
• ?gt
• lt!-- The Frontend HTML form --gt
• ltform action"lt?php echo(PHP_SELF) ?gt"
  method"POST" gt
• ltpgtInput a word ltinput type"text" size"20"
  name"you_wrote"gt
• ltinput type"submit" name"submit"
  value"Go"gtlt/pgt
• lt/formgt

7
Qu?n lý d? li?u nh?p

• Xu?t ra FORM giá tr? m?c d?nh
• ltform action"lt?php echo(PHP_SELF) ?gt"
  method"POST" gt
• Name ltinput type"text" size"20"
  name"your_name"
• value "lt?_POST"your_name"?gt" gt
• ltinput type"submit" name"submit"
  value"Go"gtlt/pgt
• lt/formgt
• ?n giá tr? trong FORM
• ltform action"lt?php echo(PHP_SELF) ?gt"
  method"POST" gt
• ltinput type"hidden" size"20" name"your_id"
• value "lt?_POST"your_id"?gt" gt
• ltinput type"submit" name"submit"
  value"Go"gtlt/pgt
• lt/formgt

8
Qu?n lý d? li?u nh?p

• Giá tr? trong FORM l?y t?/dua vào m?ng
• ltform action"lt?php echo(PHP_SELF) ?gt"
  method"POST" gt
• ltselect name"pref_cities" multiple size"3"gt
• ltoptiongtNagpurlt/optiongt
• ltoption selectedgtMumbailt/optiongt
• ltoptiongtBangalorelt/optiongt
• ltoption selectedgtChennailt/optiongt
• ltoptiongtKolkattalt/optiongt
• lt/selectgt
• ltinput type"submit" name"submit"
  value"Go"gtlt/pgt
• lt/formgt

9
Qu?n lý d? li?u nh?p

• Ki?m tra d? li?u nh?p
• client s? d?ng javascript
• ltform name"MyForm" action"lt?php echo(PHP_SELF)
  ?gt" method"POST" gt
• Name ltinput type"text" size"20"
  name"your_name"
• value "lt?_POST"your_name"?gt" gt
• ltinput type"button" name"submit" value"Go"
  onclickchecksubmit()gtlt/pgt
• lt/formgt
• ltscriptgt
• function checksubmit()
• if (document.MyForm.your_name.value"")
• alert("Please enter your name!")
• else
• document.MyForm.submit()
• lt/scriptgt
• server ki?m tra n?i dung bi?n

10
Qu?n lý d? li?u nh?p

• Ki?m tra d? li?u nh?p
• client s? d?ng javascript
• server ki?m tra n?i dung bi?n
• lt?
• if (_POST"your_name""")
• echo "Please enter your name!"
• ?gt
• ltform name"MyForm" action"lt?php echo(PHP_SELF)
  ?gt" method"POST" gt
• Name ltinput type"text" size"20"
  name"your_name"
• value "lt?_POST"your_name"?gt" gt
• ltinput type"submit" name"submit"
  value"Go"gtlt/pgt
• lt/formgt

11
N?i dung

• Nh?p d? li?u
• Qu?n lý d? li?u nh?p
• Bi?u th?c chính quy

12
Bi?u th?c chính quy

• N?i dung
• "xyz"
• "abcxyz"
• T?p h?p
• "xyz"
• "0123456789" "0-9"
• "a-Z" "a-zA-Z"
• "a-Z '-"
• "xyz"
• Thay th?, l?p l?i "", "", "?"
• "x"
• "x"
• "x?"

13
Bi?u th?c chính quy

• L?p l?i
• "ab3"
• "ab3,"
• "ab3,5"
• Nhóm
• "x(yz)"
• "z(yz)3,5"
• Ký t? d?c bi?t
• "." single character.
• "" beginning of the string
• "" end of the string

14
Bi?u th?c chính quy

• Ký t? nguyên g?c \
• Nhóm ký t?
• "alnum" "a-zA-Z_0-9"
• "digit" "0-9"
• "alpha" "a-zA-Z"

15
Bi?u th?c chính quy

• int ereg(string pattern, string string , array
  regs)
• if (ereg("(0-91,2)-(0-91,2)-(0-94)",
  date, regs))
• echo("regs2.regs1.regs3")
• else
• echo("Invalid date format date")
• array split(string pattern, string string , int
  limit)
• date "19/Sep/1966 is my date of birth"
• // Delimiters may be slash, dot, hyphen or space
• array_date split('/. -', date, 4)
• echo("Day array_date0 Month array_date1
• Year array_date2ltbrgt\n")
• echo(array_date3)