$this_array=array ("this"，“$this_array=array”，"this"，"and"，"th")

Question

如何找到数组中元素的长度，以确保每个元素的长度都超过2个字符。使用php也就是...

例如。$this_array=array ("this"，“$this_array=array”，"this"，"and"，"th")

Answer 1

循环可能有点夸张，除非你需要做更多的事情--过滤要有效得多。

<?
$this_array =  array("a", "this", "and", "this", "and", "th");

$this_array = array_filter($this_array, function($val){return strlen($val)>=2;});

print_r($this_array); // Array ( [1] => this [2] => and [3] => this [4] => and [5] => th )

注意:这只适用于PHP 5.3+。

Answer 2

foreach($this_array as $val) {
   $valLength = strlen($val); //gives length 
   if($valLength < 3) {
       //something here, less than 2 char
   } 
}

Answer 3

foreach ($this_array as $key => $value)
{
    if (strlen($value) < 3)
    {
        echo "{$value} is too short<br />";
    }
}

请参阅foreach