原样

array(3) {
  [0] => array(1) {    ["title"] => "题1"  }
  [1] => array(1) {   ["title"] => ""  }
 [2] => array(1) {    ["title"] => "题2"  }
}

结果

array(2) {
  [0] => array(1) {    ["title"] => "题1"  }
 [1] => array(1) {    ["title"] => "题2"  }
}

方式一

$a = array(
  array("title" => "题1"),
  array("title" => ""),
  array("title" => "题2"),
);
$a = array_values(array_filter($a, function($t) { return $t['title'];}));
var_dump($a);
array(2) {
  [0]=>  array(1) {    ["title"]=>    string(3) "题1"  }
  [1]=>  array(1) {    ["title"]=>    string(3) "题2"  }
}

方式二:保留键

$a = array(
  array("title" => "题1"),
  array("title" => ""),
  array("title" => "题2"),
);
 
for($i=0,$len=count($a); $i<$len; $i++){
    if($a[$i]['title']==""){
        unset($a[$i]);
    }
}
 
print_r($a);
Array
(
    [0] => Array
        (
            [title] => 题1
        )
 
    [2] => Array
        (
            [title] => 题2
        )
 
)