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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
class Solution {
/**
* @param Integer[] $nums
* @param Integer $target
* @return Integer
*/
static function search($nums, $target) {
$keys = array_keys($nums, $target);
if (count($keys) > 1) return (int)-1;
else return current($keys);
}
}
var_dump(Solution::search([-1, 0, 3], 2));