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<?php // Simulate PHP setting for output_buffering. ob_start(); assert(1 === ob_get_level()); ob_end_clean(); assert(0 === ob_get_level()); print 'before the header'; header('AAA:BBB');
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
before the header Warning: Cannot modify header information - headers already sent by (output started at /in/1aM5E:11) in /in/1aM5E on line 12
preferences:
355.25 ms | 408 KiB | 5 Q