限制数组中项目的长度

Question

我想在数组中创建描述摘要，因为它充当了完整帖子的链接。

所以举个例子。 “我今天去公园”会变成“我去了......”

我尝试了以下内容但没有取得任何成功。

我需要更改的数组是$ description []

foreach ($description as $descriptions) {

  $descriptions = substr($descriptions, 0, 12); 
  $description = ($description + '...');
}

Answer 1

使用array_walk直接修改数组中的元素..

array_walk($description,function (&$v){ $v=substr($v, 0, 12)."...";});

Answer 2

尝试此操作并使用新变量$desc

$desc = array();
foreach ($description as $descriptions) {
$desc[] = substr($descriptions, 0, 12).'...'; 
}

Answer 3

你应该这样做：

$descriptions = array('something' => 'I went to the park today');
foreach ($descriptions as $index => $value) {
    $value = substr($value, 0, 12); 
    $descriptions[$index] = ($value . '...'); 
}

现在，$descriptions将为Array ( [something] => I went to th... )

Answer 4

尝试以下。

foreach ($description as $descriptions) {    
    $descriptions = substr($descriptions, 0, 12);     
    $descriptions = ($descriptions . '...');
 }