comparing arrays

From	bill <william@TechServSys.com>
Newsgroups	comp.lang.php
Subject	comparing arrays
Date	2013-04-07 07:34 -0400
Organization	Aioe.org NNTP Server
Message-ID	<kjrlk6$8es$1@speranza.aioe.org> (permalink)

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I need to see if a patient has appointments with a 
psychotherapist and a physician on the same day.

I request the schedule of each therapist and each physician as 
arrays of arrays:
time, patient_number, duration (note, the therapist/physician id 
is not in the array)
They are non-associative arrays (numeric keys)
I might have 1..n physicians and 1..n therapists
I can generate arrays of physicians and arrays of therapists

Option 1 is a nightmare of nested foreachs

I am sure there must be an array function that will permit this 
check.  AFAIK, the _intersect functions require the same date in 
all, when what I want is "any".

my current thought is to create arrays of just pt_number, merge 
the physician arrays, merge the therapist arrays, array_flip to 
move the values to keys and then array_intersect.

But, before I try that I welcome any suggestions.

bill

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comparing arrays bill <william@TechServSys.com> - 2013-04-07 07:34 -0400
  Re: comparing arrays Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-07 08:34 -0400
    Re: comparing arrays bill <william@TechServSys.com> - 2013-04-07 10:00 -0400
      Re: comparing arrays Frank Steinmetzger <frank.steinmetzger@stud.tu-ilmenau.de> - 2013-04-07 16:14 +0200
        Re: comparing arrays Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-07 17:13 +0200
        Re: comparing arrays bill <william@TechServSys.com> - 2013-04-07 11:34 -0400
          Re: comparing arrays Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-07 21:33 +0200
      Re: comparing arrays The Natural Philosopher <tnp@invalid.invalid> - 2013-04-07 16:01 +0100
        Re: comparing arrays Frank Steinmetzger <frank.steinmetzger@stud.tu-ilmenau.de> - 2013-04-07 20:22 +0200
      Re: comparing arrays Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-07 14:18 -0400
  Re: comparing arrays Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-07 15:37 +0200
    Re: comparing arrays bill <william@TechServSys.com> - 2013-04-07 09:59 -0400
      Re: comparing arrays Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-07 17:14 +0200
  Re: comparing arrays The Natural Philosopher <tnp@invalid.invalid> - 2013-04-07 15:59 +0100

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