Outputs an element in the array that is a multiple of 5 to the drop-down menu//Put the elements in the array in the <li> tab, the odd and even Li background is different//the element in the array is a numeric type to find out

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Outputs an element in the array that is a multiple of 5 to the drop-down menu
Place the elements in the array in the

Label, odd and even Li backgrounds are different
Find the elements in the array as numbers

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  ". $item." ":" ");}); echo "$option";//Put the elements in the array
Label, the odd and even Li background is different $i = 0; $li = Implode ("", Array_map ($n) use (& $i) {$i + +; return $i%2 = = 0? "
$n
" : "
$n
";}, $arr)", echo "
  
  
  

   
   
   $li
  
  
  
", or//to find the elements in the array as digital $arr = Array (1,2,3,5,15,25, ' 12312 ', ' sdfsdf ', ' Asdasd123 '); $r = Array_reduce ($arr, function ($r, $item) {is_null ($r) && $r = Array (); return is_numeric ($item)? ar Ray_merge ($r, Array ($item)): $r; });p Rint_r ($r);? >

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