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PHP

What is the difference between numeric and associative array in loop with example?

January 30, 2020 comments off

For Loop with Numeric Array:-
Numeric Array uses in For Loop for Declaration and Initialization as numeric index values are store and access.
ex:-

<?php
$array_name [0] = "value";
$array_name [1] = "value1";
$array_name [2] = "value2";
$array_name [3] = "value3";
for ($a = 0; $a <= 3 ; ++$a)
{
echo $array_name[$a], "<br>";
}
//second example
$array_name = array ("name", "name1", "name2", "name3");
for ($a = 0; $a <= 3; ++$a)
{
echo $array_name[$a], "<br>";
}
?>
view raw numeric-for-loop.php hosted with ❤ by GitHub

For Loop with Associative Array:-
The associative array used in For Loop with strings as an index. Associative array stores element values associated with key or index ([]= this is index or key) values.
ex:-

<?php
$name = array ("value" => 500, "value1" => 400, "value2" => 300, "value3" => 200, "value4" => 100);
$keys = array_keys($name);
for ($a = 0; $a< count($keys); ++$a) // Before check condition then executed
{
echo $keys[$a], "<br>";
}
?>
view raw associative-for-loop.php hosted with ❤ by GitHub

Foreach Loop with Numeric array:-
Foreach Loop works only on arrays. It is used as each index, key or value pair in an array.
ex:-

<?php
$name [0] = "value";
$name [1] = "value1";
$name [2] = "value2";
$name [3] = "value3";
foreach($name as $val){
echo $val . "<br>";
}
//second Type
$name = array ("name", "name1", "name2", "name3", "name4");
foreach ($name as $var){
echo $var , "<br>";
}
?>
view raw numeric-foreach-loop.php hosted with ❤ by GitHub

Foreach Loop with Associative array:-
ex:-

<?php
$name = array ("name"=> 100, "name1" => 200, "name2" => 300, "name3" => 400, "name4" =>500);
foreach ($name as $var)
{
echo $var , "<br>";
}
?>
view raw associative-foreach-loop.php hosted with ❤ by GitHub

While Loop with Numeric Array:-

<?php
$value = array ("name", "name1", "name2", "name3", "name4");
$a = 0;
while($a < count ($value))
{
echo "this is numeric while loop <br>";
$a++;
}
?>
view raw numeric-while-loop.php hosted with ❤ by GitHub

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