Php关联数组函数，用于查找在数组中创建的重复的id值和非重复的值

<?php
$associativeArray = [
    'id1' => 'value1',
    'id2' => 'value2',
    'id3' => 'value1', // 重复的value
    'id4' => 'value3',
    'id5' => 'value2', // 重复的value
];

// 计算每个值出现的次数
$counts = array_count_values($associativeArray);

// 找出重复的值
$duplicates = [];
foreach ($counts as $value => $count) {
    if ($count > 1) {
        $duplicates[] = $value;
    }
}

print_r($duplicates); // 输出: Array ( [0] => value1 [1] => value2 )
?>

<?php
// 继续使用上面的$associativeArray和$counts

// 找出非重复的值
$uniqueValues = [];
foreach ($counts as $value => $count) {
    if ($count == 1) {
        $uniqueValues[] = $value;
    }
}

print_r($uniqueValues); // 输出: Array ( [0] => value3 )
?>