- array_combine: documentation ( source)
- array_column: documentation ( source)
- max: documentation ( source)
- rand: documentation ( source)
- md5: documentation ( source)
<?php
$hashs = array();
$vals = array();
for($i = 0; $i < 20; $i++){
$hashs[] = md5(rand());
$vals[] = array("Preis" => rand());
}
$groups = array_combine($hashs, $vals);
$prices = array_column($groups, "Preis");
echo max($prices);