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How to convert string to boolean in PHP?
To convert string to boolean in PHP, the code is as follows. Use the filter_val() method−
Example
<?php echo "Displaying Sunday as first day of a week...
"; $res = date('l - d/m/Y', strtotime("sunday 0 week")); echo "First day (next week) = ", $res."
"; var_dump(filter_var($res, FILTER_VALIDATE_BOOLEAN)); ?>
Output
This will produce the following output−
Displaying Sunday as first day of a week... First day (next week) = Sunday - 15/12/2019 bool(false)
Example
Let us now see another example −
<?php
var_dump(filter_var('0', FILTER_VALIDATE_BOOLEAN));
var_dump(filter_var('1', FILTER_VALIDATE_BOOLEAN));
var_dump(filter_var('-0', FILTER_VALIDATE_BOOLEAN));
var_dump(filter_var('', FILTER_VALIDATE_BOOLEAN));
?>Output
This will produce the following output−
bool(false) bool(true) bool(false) bool(false)
Updated on: 24-Dec-2019
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