如何用短代码检查多个输入字段的strlen

Multiple input fields like

<input type="text" name="row1[]" id="date1">
<input type="text" name="row1[]" id="amount1">
<input type="text" name="row1[]" id="name1">
<input type="text" name="row1[]" id="document1">

Want to check if number of characters in certain fields (not all fields) is at least 1 (in the example do not want to check number of characters in id="document1". Now using this code

if ( (strlen($_POST['row1'][0]) >= 1) or (strlen($_POST['row1'][1]) >= 1) or (strlen($_POST['row1'][2]) >= 1)) ) {
}

Is it possible to shorten code to something like (this is not working code)?

if ( (strlen($_POST['row1']??want_to_check??) >= 1) ) {
}

And input something like (also not working and not real)

<input type="text" name="row1[]??want_to_check??" id="date1">
<input type="text" name="row1[]??want_to_check??" id="amount1">
<input type="text" name="row1[]??want_to_check??" id="name1">
<input type="text" name="row1[]??do_not_want_to_check??" id="document1">

Check number of characters only in certain fields (not all fields)

a tricky shorthand

if (count(array_filter($_POST['row1'],'trim')) != count($_POST['row1'])) {
    //not all fields are set
}

but in general, if you see a repetition - you can be sure that a loop can be used. Look:

if ( (
    strlen($_POST['row1'][0]) >= 1) 
or (strlen($_POST['row1'][1]) >= 1) 
or (strlen($_POST['row1'][2]) >= 1)) ) 

three repeated operators with only counter changing. I am sure you can write a loop for this. Can't you?

Update

1. Make sensible field names

   <input type="text" name="row1[date]" id="date1">
   <input type="text" name="row1[amount]" id="amount1">
   <input type="text" name="row1[name]" id="name1">
   <input type="text" name="row1[document]" id="document1">
   

2. Create an array with required field names

   $req = array('date1','amount1','name1');
   

3. Check your input against this array in a loop

You can loop through fields using foreach

$field_set = false;
if(!empty($_POST['row1'])){
    foreach($_POST['row1'] as $key => $row){
        //Your code here
        if(trim($_POST['row1']))
            $field_set = true;
    }
} 

This will work if you have dynamic number of fields.

Something like this might work

function checkLength($inputs) {
    foreach($inputs as $input) {
        if(strlen($input) < 1) return false;
    }
    return true;
}

if(checkLength(array($_POST['input1'], $_POST['input2'], $_POST['input3']))) {

}