1: --TEST--
2: Test basic functionality of flush()
3: --FILE--
4: <?php
5: /*
6: * proto void flush(void)
7: * Function is implemented in ext/standard/basic_functions.c.
8: */
9:
10: // Verify return type
11: var_dump(flush());
12:
13: // Ensure user buffers are not flushed by flush()
14: ob_start();
15: echo "Inside a user buffer\n";
16: flush();
17: ob_end_clean();
18:
19: echo "Outside of any user buffers\n";
20: var_dump(flush());
21:
22: ?>
23: --EXPECT--
24: NULL
25: Outside of any user buffers
26: NULL
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