How to determine whether a php array is an index array_PHP tutorial

HP does not have a built-in method to determine whether to index an array. It simply implements one. Usage:

Copy code The code is as follows:

echo is_assoc($array)?'Index array':'Not an index array';

The is_assoc function is as follows:

Copy code The code is as follows:

function is_assoc($array) {
if(is_array($array)) {
$keys = array_keys($array);
return $keys! = array_keys($keys);
      }
         return false;
                                                           

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www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/327562.htmlTechArticleHP does not have a built-in method to determine whether to index an array. We simply implemented one. Usage: Copy the code. The code is as follows: echo is_assoc ($array)?'Index array':'Not an index array'; is_assoc function...