问我只想使用1 foreach在数组中找到我的值。

EN

<?php
ini_set("display_errors", 1);
$search=2;
$result=null;
$myarr = array(
    '1',
    '2',
    '3',
    '4-7',
    '9',
    '10',
);
echo search_in_array($myarr,$search);
function search_in_array($myarr,$search)
{
    $result=false;
    array_map(function($number) use ($myarr,$search, &$result){
        if(preg_match("/^(\d+)\-(\d+)$/", $number,$matches))
        {
            if(in_array($search,range($matches[1],$matches[2]))) 
            {
                $result= true;
            }
        }
        elseif(preg_match("/^(\d+)$/", $number,$matches))
        {
            if(in_array($search,$myarr))
            {
                $result= true;
            }   
        }
    }, $myarr);
    return $result;
}

$myarr = [
    '1',
    '2',
    '3',
    '4-7',
    '9',
    '10',
];

$search2 = '2';
$search5 = '5';
$search12 = '12';

function myInArray($needle, $haystack) {
    return in_array(
        $needle,
        array_reduce(
            $haystack,
            function($incrementor, $value) {
                return array_merge($incrementor, (strpos($value, '-') !== false) ? range(...explode('-', $value)) : [(int)$value]);
            },
            []
        )
    );
}

foreach([$search2, $search5, $search12] as $searchValue) {
    echo $searchValue, " is ",(myInArray($searchValue, $myarr) ? '' : 'NOT '), "in the array", PHP_EOL;
}

$search = '5';
$matches  = explode('-',array_values(preg_grep('/[-]/', $myarr))[0]);
if(in_array($search, $myarr)|| in_array($search,range($matches[0],$matches[1]))){
    echo "found";
}else{
    echo "not found";
}