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Why Doesn't PHP Echo False Boolean Values and How Can I Fix It?

Barbara Streisand
Release: 2024-12-17 00:43:25
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Why Doesn't PHP Echo False Boolean Values and How Can I Fix It?

Echoing False Boolean Values in PHP

The PHP code provided attempts to echo a boolean value but does not produce an output when the value is false. This behavior stems from the default behavior of PHP, where false is not converted to a string when echoing.

To address this issue, there are several solutions:

  1. Ternary Operator:
echo $bool_val ? 'true' : 'false';
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This approach uses the ternary operator to output 'true' if $bool_val is true and 'false' if it is false.

  1. Conditional Echo:
echo !$bool_val ? 'false' : '';
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This method conditionally echoes 'false' only when $bool_val is false. If $bool_val is true, no output is produced.

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source:php.cn
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