php empty array code example

Example 1: array empty check in php

if (empty($array)) {
     // list is empty.
}

Example 2: array should not be empty php

$arr = array();

if(!empty($arr)){
  echo "not empty";
}
else 
{
  echo "empty";
}

Example 3: remove empty array elements php

$colors = array("red","","blue",NULL);

$colorsNoEmptyOrNull = array_filter($colors, function($v){ 
 return !is_null($v) && $v !== ''; 
});
//$colorsNoEmptyOrNull is now ["red","blue"]

Example 4: declare empty array in php

$emptyArray = []; 
$emptyArray = array();
$emptyArray = (array) null;

Example 5: php empty array

//To clear array you are able to simply re-instantiate it
$foo = array();

//To clear $foo from the symbol table use
unset($foo);