PHP 中检查数组合并是否成功的方法包括:(1)检查返回的数组是否为数组;(2)检查返回的数组长度是否等于预期长度。实战案例:合并两个员工数组,通过检查合并后数组长度是否等于预期值以判断合并是否成功。
PHP 数组合并后检查合并是否成功的实用指南
在 PHP 中,我们可以使用 array_merge()
函数合并多个数组。但是,了解如何检查合并是否成功至关重要,以避免意外结果。
检查合并成功的方法
有两种常见的方法来检查数组合并是否成功:
$arr1 = [1, 2, 3]; $arr2 = [4, 5, 6]; $merged = array_merge($arr1, $arr2); if (is_array($merged)) { // 合并成功 } else { // 合并失败 }
$length = count($arr1) + count($arr2); $merged = array_merge($arr1, $arr2); if (count($merged) == $length) { // 合并成功 } else { // 合并失败 }
实战案例
在以下实战案例中,我们合并两个员工数组,每个数组包含员工的姓名和工资:
$employees1 = [ ['name' => 'John', 'salary' => 1000], ['name' => 'Jane', 'salary' => 1200], ]; $employees2 = [ ['name' => 'Mike', 'salary' => 900], ['name' => 'Alice', 'salary' => 1100], ]; $mergedEmployees = array_merge($employees1, $employees2); if (count($mergedEmployees) == (count($employees1) + count($employees2))) { // 合并成功 // 访问合并后的员工数据 foreach ($mergedEmployees as $employee) { echo "{$employee['name']} earns \${$employee['salary']}\n"; } } else { // 合并失败,处理错误 }
输出:
John earns $1000 Jane earns $1200 Mike earns $900 Alice earns $1100
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