empty an array php code example

Example 1: array empty check in php

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

Example 2: 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 3: declare empty array in php

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

Example 4: 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);

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