php5 cli: no output

Question

i've got a php script that runs on the command line. To improve it's performance, i would like to completely suppress it's output.

How can I do that?

Thanks!

Cem Kalyoncu · Accepted Answer · 2009-09-17 10:25:17Z

5

Not sure about performance but you can use

php -q myscript.php > /dev/null

answered Sep 17, 2009 at 10:25

Cem Kalyoncu

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Comments

Paul Dixon · Accepted Answer · 2009-09-17 10:38:16Z

2

One way would be to call ob_start() to turn on output buffering, and periodically call ob_clean() if you really don't want the output (or use a dummy ob_start() callback which does nothing).

Not sure how much of a performance gain this would be, as internally, PHP is still processing the output, except it goes into a buffer rather than to stdout.

If you've got a lot of diagnostic output you want to prevent, than it might be more effective to refactor your code to allow that to be suppressed by an application option.

edited Sep 17, 2009 at 10:38

answered Sep 17, 2009 at 10:25

Paul Dixon

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1 Comment

Michael Krelin - hacker Over a year ago

That's why I proposed dummy ob_esity that devours all output before it hits the buffer.

scragar · Accepted Answer · 2009-09-17 10:42:05Z

1

fclose(STDOUT);

This will work cross platform as the first line in the PHP script.

answered Sep 17, 2009 at 10:42

scragar

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Comments

igustin · Accepted Answer · 2009-09-17 10:25:51Z

0

Using > /dev/null is not enough?

answered Sep 17, 2009 at 10:25

igustin

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Cem Kalyoncu · Accepted Answer · 2009-09-17 10:30:29Z

0

If you have access to the script replace all echo with //echo. Perfect performance increase, but you will need to check multi-line echo statements.

answered Sep 17, 2009 at 10:30

Cem Kalyoncu

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Michael Krelin - hacker · Accepted Answer · 2009-09-17 10:33:15Z

0

function ob_esity($b) { return ''; }
ob_start('ob_esity');

edited Sep 17, 2009 at 10:33

answered Sep 17, 2009 at 10:25

Michael Krelin - hacker

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Michael Krelin - hacker Over a year ago

Neither I do. Well, maybe a bit. It sure will not buffer anything. I'd go for redirecting output myself, but that wouldn't comply with php tag ;-)

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