1--TEST-- 2Output buffering tests 3--INI-- 4output_buffering=0 5output_handler= 6zlib.output_compression=0 7zlib.output_handler= 8--FILE-- 9<?php 10ob_start(); 11echo ob_get_level(); 12echo 'A'; 13 ob_start(); 14 echo ob_get_level(); 15 echo 'B'; 16 $b = ob_get_contents(); 17 ob_end_clean(); 18$a = ob_get_contents(); 19ob_end_clean(); 20 21var_dump( $b ); // 2B 22var_dump( $a ); // 1A 23?> 24--EXPECT-- 25string(2) "2B" 26string(2) "1A" 27