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Empty string: Difference between revisions
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say 'String is empty' unless $s.chars;
say 'String is not empty' if $s.chars;</lang>
=={{header|PHP}}==
<lang Php><?php
$str = ''; // assign an empty string to a variable
// check that a string is empty
if (empty($str)) { ... }
// check that a string is not empty
if (! empty($str)) { ... }
// we could also use the following
if ($str == '') { ... }
if ($str != '') { ... }
if (strlen($str) == 0) { ... }
if (strlen($str) != 0) { ... }</lang>
=={{header|PicoLisp}}==
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