Php根据列从多维数组中获取匹配值

<?php
// 示例多维数组
$students = array(
    array('name' => 'Alice', 'age' => 20, 'grade' => 'A'),
    array('name' => 'Bob', 'age' => 22, 'grade' => 'B'),
    array('name' => 'Charlie', 'age' => 21, 'grade' => 'A'),
);

$columnName = 'age'; // 要匹配的列名
$columnValue = 22; // 要匹配的值

$matchedStudents = array(); // 存储匹配结果的数组

foreach ($students as $student) {
    if ($student[$columnName] == $columnValue) {
        $matchedStudents[] = $student;
    }
}

// 输出匹配结果
foreach ($matchedStudents as $matchedStudent) {
    echo "Name: " . $matchedStudent['name'] . ", Age: " . $matchedStudent['age'] . ", Grade: " . $matchedStudent['grade'] . "\n";
}
?>