PHP Array
Subject: Web development using PHP and MySQL
Array is a special variable, which can hold more than one value at a time. This is a more convenience way to handle a collection of defined data and we often use a loop to access array data.
Example 1
<?php
$state = array("Anambra", "Lagos", "Kaduna", "Edo");
?>
Accessing Array Value with indexNote: an array index is the way we access array values, and this index numbering start from 0 and not 1, therefore the $state array we created has 4 elements with their index as follows (Anambra[0], Lagos[1], Kaduna[2], Edo[3]
Example 2
<?php
$state = array("Anambra", "Lagos", "Kaduna", "Edo");
echo "I visited ". $state[0]." and ". $state[2];
?>
Output:
I visited Anambra and Kaduna
Count functionUsing the count function tells us the length (number of elements) of an array.
Example 3
<?php
$state = array("Anambra", "Lagos", "Kaduna", "Edo");
echo count($state);
?>
Output:
4
Looping through all Array ValueNote: I appended the break line tag
so that each array value can appear on separate line.
Example 4
<?php
$state = array("Anambra", "Lagos", "Kaduna", "Edo");
$array_len = count($state);
for($i=0; $i<$array_len; $i++){
print $state[$i]."<br/>";
}
?>
Output:
Anambra
Lagos
Kaduna
Edo
By:
Benjamin Onuorah
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