[MacPorts] #53971: php-igbinary update to support php7

[MacPorts]

#53971: php-igbinary update to support php7
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  Reporter:  chrisminett   |      Owner:  pixilla
      Type:  enhancement   |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  php-igbinary  |
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Comment (by ryandesign):

 I had started working on this update, but php*-memcached depends on
 php*-igbinary, and because of the major version number increase, I didn't
 know whether the new php-igbinary is compatible with the old php-
 memcached. I wanted to have an update to php-memcached available at the
 same time. That's #50135 but it needs a new version of libmemcached.

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Ticket URL: <https://trac.macports.org/ticket/53971#comment:3>
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