Question

我有一个数组，我想只返回数组的最低值，但无论我尝试什么，我得到错误或我得到完整的列表。帮助

function myForEachLoop()

$StudentPopulation = array('BSU'=>19664, 'CSU'=>25500, 'SDSU'=>35887, 'UHM'=>20000,
    'AFA'=>4000, 'UNLV'=>28000, 'FS'=>21389, 'UNR'=>17000, 'UNM'=>25767, 'UW'=>13476);
ksort($StudentPopulation);

foreach($StudentPopulation as $aSchool => $aPop)
    {
    $output .= '<strong>School:</strong> ' . ($aSchool) . '<strong> Population:</strong> ' . $aPop . '<br />';
}
return $output;

我想回归“学校：AFA”人口：4000“。

Answer 1

这个问题几乎没有任何意义，但如果你真的需要这样做，请尝试：

function myForEachLoop(&$StudentPopulation) {
ksort($StudentPopulation);
$min = 'NO_MIN';
foreach($StudentPopulation as $aSchool => $aPop)
    {
    if($min=='NO_MIN' || $aPop<$min) {
    $output = '<strong>School:</strong> ' . ($aSchool) . '<strong> Population:</strong> ' . $aPop . '<br />';
    $min = $aPop;
    }
}
return $output;
}

$StudentPopulation = array('BSU'=>19664, 'CSU'=>25500, 'SDSU'=>35887, 'UHM'=>20000,
    'AFA'=>4000, 'UNLV'=>28000, 'FS'=>21389, 'UNR'=>17000, 'UNM'=>25767, 'UW'=>13476);
echo myForEachLoop($StudentPopulation);

Answer 2

试试这个：

function myForEachLoop()
{

$StudentPopulation = array('BSU'=>19664, 'CSU'=>25500, 'SDSU'=>35887, 'UHM'=>20000,
    'AFA'=>4000, 'UNLV'=>28000, 'FS'=>21389, 'UNR'=>17000, 'UNM'=>25767, 'UW'=>13476);
ksort($StudentPopulation);


$lowestValue = min($studentPopulation); // 4000
$lowestValueIndex = array_keys($studentPopulation, min($studentPopulation)); //  AFA


$output .= '<strong>School:</strong> ' . ($lowestValueIndex) . '<strong> Population:</strong> ' . $lowestValue. '<br />'

return $output;
}

通过foreach循环返回函数中数组的最小值？

2 个答案: