PHP Basic & Arrays
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An array can hold all your variable values under a single name. And you can access the values by referring to the array name. Each element in the array has its own index so that it can be easily accessed. In PHP, there are three kind of arrays: Numeric array - An array with a numeric index Associative array - An array where each ID key is associated with a value Multidimensional array - An array containing one or more arrays
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Last edited January, 2015 by C. Herbert
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The Java Learning Kit:
Chapter 6
Arrays
Lesson 6.1 – Arrays
Lesson 6.2 – One Dimensional Arrays in Java
Lesson 6.3 – Operations on Numeric Arrays
Lesson 6.4 – Searching and Sorting Arrays
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JLK Chapter 6 – Arrays DRAFT 2015 Edition pg. 2
Contents
Chapter 6 Learning Outcomes .................................................................................................................... 3
Arrays .............................................................................................................................. 4
Array Storage in Computer Memory ................................................................................................... 5
CheckPoint 6.1 .................................................................................................................................... 6
One Dimensional Arrays in Java ...................................................................................... 7
What is actually in an array in Java? ................................................................................................... 7
Assigning Values to Array Elements .................................................................................................. 10
The Array length Property; Iterating an Array ................................................................................... 11
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Copying an Array ............................................................................................................................... 13
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PHP Basic & Arrays
- 1. Lecturer: M.Zalmai “Rahmani” rahmani.zalmai@gmail.com Web Programming II Lecture 03 PHP Basic & Arrays Azma Institute Database Department
- 2. PHP Arrays What is an Array? A variable is a storage area holding a number or text.The problem is, a variable will hold only one value. An array is a special variable, which can store multiple values in one single variable. If you have a list of items (a list of car names, for example), storing the cars in single variables could look like this: $cars1="Saab"; $cars2="Volvo"; $cars3="BMW"; However, what if you want to loop through the cars and find a specific one? And what if you had not 3 cars, but 300? The best solution here is to use an array!
- 3. PHP Arrays What is an Array? An array can hold all your variable values under a single name. And you can access the values by referring to the array name. Each element in the array has its own index so that it can be easily accessed. In PHP, there are three kind of arrays: • Numeric array - An array with a numeric index • Associative array - An array where each ID key is associated with a value • Multidimensional array - An array containing one or more arrays
- 4. PHP Arrays Numeric Arrays A numeric array stores each array element with a numeric index. There are two methods to create a numeric array.
- 6. PHP Arrays Associative Arrays An associative array, each ID key is associated with a value. When storing data about specific named values, a numerical array is not always the best way to do it. With associative arrays we can use the values as keys and assign values to them.
- 9. PHP Arrays Multidimensional Arrays is Not Recommend in this Course We will study in next semester
- 10. PHP Arrays Multidimensional Arrays In a multidimensional array, each element in the main array can also be an array. And each element in the sub-array can be an array, and so on.
- 11. PHP Arrays