如何从PHP 4.0中的数组返回最长的字符串？ 我尝试了最大功能，但似乎抛出异常

Question

I would like to return the longest string in an array in php 4.0 my sample code looks like this.

$MyArray=Array("Jane","Magdalene","Bull fighting champion","cruising","Tommy Lee Jones","View","axe");
$largest = max($MyArray); 
echo $largest.

Answer 1

max() is to give the maximum from a list of integers. Unfortunately, your problem is more complicated.

<?php
$MyArray=Array("Jane","Magdalene","Bull fighting champion","cruising","Tommy Lee Jones","View","axe");
$maxlen = 0;
$idx = -1;
for ($i=count($MyArray); $i; $i--) {
    $len = strlen($MyArray[$i-1]);
    if ($len > $maxlen) {
        $maxlen = $len;
        $idx = $i-1;
    };
}
if ($idx >0) {
    echo $MyArray[$idx];
}