How do I get the highest value when using loops?

I want to get the highest value of my array. This are the two ways when I'm working with php functions.

$a = array(1,125,1068); 
1.  $value = max($a);  
    print_r ($value);

2.  asort($a);
    $value = end($a);
    print_r ($value);

I just couldn't fig开发者_运维技巧ure out how to get the highest value when using loops.

You do it like this:

$highest = 0;
//if you have negative values: $highest = min($a);
foreach($a as $item){
    if ($item > $highest){
        $highest = $item;
    }
}

Without using the max() function, you can do something like

<?php
$a = array(1,125,1068)
$max = $a[0];
for ($i = 1; $i <count($a); $i++) {
    if ($a[$i] > $max) {
        $max = $a[$i];
    }
}

echo $max; ?>

max()

http://php.net/manual/en/function.max.php

$dd = array(50, -25, -5, 80, -40, -152, -45, 28, -455, 100, 98, -455);
$curr = '';
$max = $dd[0];

for($i = 0; $i < count($dd); $i++) {
    $curr = $dd[$i];

    if($curr >= $max) {
        $max = $curr;   
   }
}