Php-set cookies : Warning: Cannot modify header informationheaders already sent by?

Caution:Cannot transform header data – headers already sent through (output started out at /Applications/MAMP/bin/mamp/mydata/cooki within /Applications/MAMP/bin/mamp/mydata/cooki on line 6

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Cookies are sent in HTTP headers ( = material sent before HTML end result starts).So just move a person’s php line to the top of the file, previously mentioned .