null_if.md

null_if()

Returns NULL if the given values are equal.

null_if($value, $compared = '')

• $value - A given value.
• $compared - Comparison value.

$var = '';
...
$var = null_if($var);  // $var = NULL

# Specify the comparision value
$var = array();
...
$var = null_if($var, []);  // $var = NULL