PHP搜索重复值的多维数组

$array = array(
    array('name' => 'John', 'age' => 25),
    array('name' => 'Jane', 'age' => 30),
    array('name' => 'John', 'age' => 25),
    array('name' => 'Bob', 'age' => 35),
    array('name' => 'John', 'age' => 25)
);

// 统计数组中每个值出现的次数
$countValues = array_count_values(array_map('serialize', $array));

// 搜索重复值
$repeatedValues = array_filter($countValues, function($count) {
    return $count > 1;
});

// 输出重复值及其出现次数
foreach ($repeatedValues as $value => $count) {
    echo "值: $value, 出现次数: $count\n";
}

值: a:2:{s:4:"name";s:4:"John";s:3:"age";i:25;}, 出现次数: 3