像这样:
$array = [
'first_name' => 'John',
'last_name' => 'Doe',
'email' => '',
];
if(count($array) != count(array_filter($array))){
echo 'some rows are empty';
}
如果您想知道哪些特定字段为空,可以使用array_diff_key
$array = [
'first_name' => 'John',
'last_name' => 'Doe',
'email' => '',
];
$filled = array_filter($array);
if(count($array) != count($filled)){
$empty = array_diff_key($array, $filled);
echo 'field(s) '.implode(', ', array_keys($empty)).' are empty';
}
输出:
field(s) email are empty
显然,您可以改进错误字符串或其他内容。因此,在您的情况下,我会这样做:
if(count($array) != count($filled)){
$empty = array_keys(array_diff_key($array, $filled));
$last = '';
if(count($empty) > 1 ){
$last = ' and '.array_pop($empty);
}
$fields = implode(', ', $empty).$last;
echo json_encode(array('condition' => 'error','data' => 'Please fill in '.$fields));
}
因此,它应该输出类似于这样的内容:
Please fill in email
Please fill in first_name and email
Please fill in first_name, last_name and email
你甚至可以这样做:
$empty = array_map(function($item){
return ucwords(str_replace('_', ' ', $item));
}, $empty);
如果你想更加高级一些,可以将first_name
转换为First Name
。
所以... 将所有这些放在一起:
$array = [
'first_name' => '',
'last_name' => '',
'email' => '',
];
$filled = array_filter($array);
if(count($array) != count($filled)){
$empty = array_map(function($item){
return ucwords(str_replace('_', ' ', $item));
},array_keys(array_diff_key($array, $filled)));
$last = '';
if(count($empty) > 1 ){
$last = " and '".array_pop($empty)."'";
}
$fields = "'".implode("', '", $empty)."'".$last;
echo json_encode(['condition' => 'error','data' => 'Please fill in '.$fields]);
}
输出:
{"condition":"error","data":"Please fill in 'First Name', 'Last Name' and 'Email'"}
您可以在此处实时查看:链接
现在它会准确告诉他们需要哪些字段,而不是一般性的错误提示。