What is the name of the standard error stream (Apache+php) -

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I want to use file_put_contents from PHP in some text to the apache error log (listens on the stderror error stream)
I am remembering the name of this stream, and I have to keep it: // Before there will be something similar in the way.

thanks

to

php: // stdin , php: // stdout and from php: // stderr allow direct access to the related input or output stream of the PHP process. It is recommended that you use the constant STDIN , STDOUT and STDERR instead of opening currents manually using these wrappers .


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