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/**
* @desc 获取二维数组某个键的最大值或最小值
*
* @param array $arr
* @param string $keys
* @param array $data
*/
public function phpMaxMin($arr = [],$keys = ''){
$max['key'] = '';
$max['value'] = '';
$min['key'] = '';
$min['value'] = '';
foreach ($arr as $key => $val){
if($max['key'] === ''){
$max['key'] = $key;
$max['value'] = $val[$keys];
}
if((int)$max['value'] < $val[$keys]){
$max['key'] = $key;
$max['value'] = $val[$keys];
}
if($min['key'] === ''){
$min['key'] = $key;
$min['value'] = $val[$keys];
}
if((int)$min['value'] > $val[$keys]){
$min['key'] = $key;
$min['value'] = $val[$keys];
}
}
$array['max'] = $max;
$array['min'] = $min;
return $array;
}
phpMaxMin($array,'key');