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run code in 500+ PHP versions simultaneously
<?php setlocale( LC_NUMERIC, 'de_DE.UTF-8' ); $float = 3.45; echo ' (string) $float => '; var_dump( (string) $float ); // string(4) "3,45" <-- comma in PHP<8 echo 'json_encode( $float ) => '; var_dump( json_encode( $float ) ); // string(4) "3.45" <-- always a period in PHP 7+

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