Manual do PHP
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# while syntax

Just like with if..endif, the syntax of while..endwhile has changed as well:

Exemplo D-7. Migration: old while..endwhile syntax

`while ($more_to_come); ... endwhile;`

Exemplo D-8. Migration: new while..endwhile syntax

`while ($more_to_come): ... endwhile;`

Atenção
If you use the old while..endwhile syntax in PHP 3.0, you will get a never-ending loop.

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