By Ray Yao
“PHP & MySQL in eight Hours” is an invaluable e-book for newcomers. you could research whole basic wisdom of personal home page and MySQL quickly and simply. the simple definitions, the obvious and straightforward examples, the flowery motives and the neat and lovely structure function this beneficial and educative e-book. you'll be inspired by way of the recent designated composing variety. analyzing this ebook is a smart leisure! you could grasp all crucial Hypertext Preprocessor and MySQL ability speedy.
Table of Contents
Hour 1 commence PHP
Hour 2 personal home page Basic
Hour three Use Array
Hour four shape Basic
Hour five Dynamic Data
Hour 6 classification & Object
Hour 7 MySql Basic
Hour eight MySql & PHP
Appendix 1 Hypertext Preprocessor 6 safeguard Programs
How to clear out Malicious Password?
How to filter out Malicious Characters?
How to clear out Malicious Input?
How to restrict precise Input?
How to flee Output?
How to guard Your Database?
Appendix 2 MySQL Command Charts
Appendix three personal home page a hundred checks & Answers
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Extra resources for PHP: MySQL in 8 Hours
Sample text
Example: $color=array(“yellow”, “red”, “blue”, “white”); sort ( $color ); …… ( Output: blue red white yellow ) Explanation: sort ( $color ) rearranges the order of $color array elements by value. After sorting, the array elements list in order as “blue red white yellow”. Array keys & Values Array elements are consisted of keys and value pair. array( key1=>value1, key2=>value2, kay3=>value3…); “=>” is used to connect key and value. > ( Output: PHP) Explanation: A string can act as an index of array.
In_array( $_POST[“words”], $myarray)” checks the inputted words if accord with the specified characters or numbers in $myarray. “$clean[“words”]” stores the specified words only. Escape Output Escape output means encoding the output so that the original meaning is preserved, which can prevents the user from potentially damaging commands. htmlentities( ); htmlspecialchars( ); “htmlentities( );” and “htmlspecialchars( )” can convert characters to HTML entities in source code. Example: $str = "< © Ray >"; echo htmlentities ( $str ); ( Output in source code: <©Ray;> ) Explanation “htmlentities($str)” converts the "< © Ray >" to html entities.
Example: $num=0; while ($num<10){ $num++; if ($num==5) continue; echo ( $num ); } ( Output: 1234678910) Explanation: Note that the output has no 5. “if ($num==5) continue;” includes “continue” command. When the $num is 5, the program will run “continue”, skipping the next command “echo ( $num )”, and then continue the next loop. Hour 3 Use Array Create an Array An array is a particular variable, which can contain one or more value at a time. array( ) is used to create an array. The syntax to create an array: $array-name = array (“value0”, “value1”, “value2”); Other syntax to create an array: $array-name = array ( ); $array-name[index0] = “value1”; $array-name[index1] = “value1”; $array-name[index2] = “value2”; Example: $color = array ( ); $color [0] = red; $color [1] = blue; $color [2] = green; Explanation: Above code creates an array, array name is $color, it has three elements: $color [0], $color [1], $color [2].