PHP foreach在一个函数中只运行一次

Question

我正在尝试运行foreach循环来检查表单中的某个必填字段是否为空,并通过错误数组输出缺少的字段.每个变量都分配给$ _POST变量.

但是,一旦我调用该函数:

fields_empty($requiredFields, $fieldErrors);

它只运行一次,而不是循环错误.这是完整的源代码:

$requiredFields = array(
    "First Name"=>$fname,
    "Last Name"=>$lname,
    "Email"=>$email,
    "Password"=>$pass1,
    "Confirm Password"=>$pass2,
    "Country"=>$country,
    "Address 1"=>$addr1,
    "City"=>$city,
    "State"=>$state,
    "Postal Code"=>$pcode,
    "Phone Number"=>$phone
);

$fieldErrors = array();

function fields_empty($requiredFields, $fieldErrors) {
    global $fieldErrors;
    foreach($requiredFields as $name => $field) {
        if (empty($field)) {
            array_push($fieldErrors, "$name is required.<br>");
            return true;
        }
    }
}

fields_empty($requiredFields, $fieldErrors);
print_r($fieldErrors);

浏览器输出:

Array (
    [0] => First Name is required.
)

此外,这只发生在函数中.如果我在没有函数的情况下执行它,它会显示所有缺少的字段.

Answer 1

从函数中删除返回.什么回报确实是终止函数并返回无论是与通过回归其设置,这里真.删除返回将使循环继续运行.

function fields_empty($requiredFields, $fieldErrors) {
   global $fieldErrors;
   foreach($requiredFields as $name => $field) {
      if (empty($field)) {
         array_push($fieldErrors, "$name is required.<br>");
      }
   }
}