php in_array key value code example
Example 1: php key exists
$fruits = ['apple', 'pear', 'banana'];
if (array_key_exists("banana", $fruits)) {
}
$exists = array_key_exists("peach", $fruits);
Example 2: php key in array exists
<?php
$search_array = array('first' => null, 'second' => 4);
isset($search_array['first']);
array_key_exists('first', $search_array);
?>
Example 3: array key value php
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
foreach($age as $x=>$x_value)
{
echo "Key=" . $x . ", Value=" . $x_value;
echo "<br>";
}
?>