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"; // Add an output buffer ob_start(); $buffer_count = ob_get_level(); echo "Buffer level: $buffer_count.
"; // Add another output buffer ob_start(); $buffer_count = ob_get_level(); echo "Buffer level: $buffer_count.
"; // Close all buffers ob_end_flush(); ob_end_flush(); ?>
Buffer level: 0.
Buffer level: 1.
Buffer level: 2.