php判断数组元素不为空格实例代码

<?PHP
header("Content-type:text/html;charset=utf-8");
$arr = array(10,"编程网",20," ","php教程");
$i=0;
foreach ($arr as $value) {
    if($value!=" "){
        $i++;
    }else{
        $i=0;
        break;
    }
}
if ($i==0) {
    echo("数组中有元素为空格");
} else {
    echo("数组元素都不为空格");
}
?>

<?php 
$arr = array( 
1=>"11", 
2=>"22", 
3=>"33", 
4=>"" 
); 
print_r(count(array_filter($arr))); 
?>