) 

etc etc . 

[9] => Array( 

[BIZNAME] => Kielty Computers 

) 

[10] => Array( 

[DESC] => laptop 

[MAKE] => Toshiba 

[MODEL] => Satellite 

[PRICE] => 1699 

) 

) 

Now that we have an array of items and their attributes from all of the requested shops 

($shoparray[]),  and  a  list  of  criteria  to  compare  those  attributes  against  ($mcrits[]),  we 

call  the  grep()  function,  which  takes  these  two  arrays  as  parameters.  grep()  invokes 

test_line() on each of the items in of $shopsarray[] (each item in turn being an associative 

array). If an item passes test_line(), the function spit() prints it to the screen. grep() also 

keeps track of the title of the current business, without which there would be a long list of 

products with no indication as to which shop they come from. 

test_line() tests each of the key/value pairs of $mcrit[] (query criteria) against each of the 

key/value pairs in the item array (referred to as line[] within the function). A $yescount 

variable  is  incremented  each  time  one  of  the  query  criteria  matches  one  of  the  item 

attributes  and  the  function  only  returns  true  if,  at  the  end,  $yescount  is  equal  to  the 

number  of  search  criteria  (and  thus,  by  definition,  the  item  has  matched  all  of  the 

criteria). 

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