gaspersic/freeCodeCamp
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Get The Length of an Array - The count() Function (#30983)

Browse Source
This commit is contained in:
Imam Wahyudi
2019-03-21 20:29:10 +07:00
committed by The Coding Aviator
parent 39bb57d318
commit 1b4e3c01b7
1 changed files with 15 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
guide/english/php/arrays/index.md
View File

@ -11,7 +11,7 @@ In PHP, there are two types of arrays: Indexed arrays and Associative arrays. Ea
### Indexed Array Example ### Indexed Array Example
An indexed array is a list of ordered values. Each of these values in the array is assigned an index number. Indexes for arrays always start at `0` for the first value and then increase by one from there. An indexed array is a list of ordered values. Each of these values in the array is assigned an index number. Indexes for arrays always start at `0` for the first value and then increase by one from there.
```PHP ```php
<?php <?php
$shopping_list = array("eggs", "milk", "cheese"); $shopping_list = array("eggs", "milk", "cheese");
``` ```
@ -20,7 +20,7 @@ $shopping_list = array("eggs", "milk", "cheese");
### Associative Array Example ### Associative Array Example
An associative array is a list of values that are accessed via a key instead of index numbers. The key can be any value but it must be unique to the array. An associative array is a list of values that are accessed via a key instead of index numbers. The key can be any value but it must be unique to the array.
```PHP ```php
<?php <?php
$student_scores = array("Joe" => 83, "Frank" => "93", "Benji" => "90"); $student_scores = array("Joe" => 83, "Frank" => "93", "Benji" => "90");
``` ```
@ -28,7 +28,7 @@ $student_scores = array("Joe" => 83, "Frank" => "93", "Benji" => "90");
### Multidimensional Array Example ### Multidimensional Array Example
A multidimensional array is an array that contains other arrays. This lets you create complex data structures that can model a very complex group of data. A multidimensional array is an array that contains other arrays. This lets you create complex data structures that can model a very complex group of data.
```PHP ```php
<?php <?php
$students = $students =
array( array(
@ -42,5 +42,16 @@ Now you can get the first student's `first_name` with:
```PHP ```PHP
$students[0]['first_name'] $students[0]['first_name']
``` ```
### Get The Length of an Array - The count() Function
The `"count()"` function is used to return the length (the number of elements) of an array:
```php
<?php
<?php
$cars = array("Volvo", "BMW", "Toyota");
echo count($cars);
?>
```
#### More Information: #### More Information:
* <a href="https://secure.php.net/manual/en/language.types.array.php" rel="nofollow">php.net arrays manual</a> * <a href="https://secure.php.net/manual/en/language.types.array.php" rel="nofollow">php.net arrays manual</a>