Answers for "get values of sub array php"

php sub list

function sortByAge($a, $b) {
    return $a['age'] > $b['age'];
}
$people=[
    ["age"=>54,"first_name"=>"Bob","last_name"=>"Dillion"],
    ["age"=>22,"first_name"=>"Sarah","last_name"=>"Harvard"],
    ["age"=>31,"first_name"=>"Chuck","last_name"=>"Bartowski"]
];

usort($people, 'sortByAge'); //$people is now sorted by age (ascending)

php sub list

<?php
$str = "Africa Beautiful!";
echo substr($str, 0, 6);  // Outputs: Africa
echo substr($str, 0, -10); // Outputs: Beautiful
echo substr($str, 0);     // Outputs: Africa Beautiful!
?>