PHP - *fast* serialize/unserialize?

Question

I have a PHP script that builds a binary search tree over a rather large CSV file (5MB+). This is nice and all, but it takes about 3 seconds to read/parse/index the file.

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Answer 1

i see two options here

string serialization, in the simplest form something like

  write => implode("\x01", (array) $node);
  read  => explode() + $node->payload = $a[0]; $node->value = $a[1] etc

binary serialization with pack()

  write => pack("fnna*", $node->value, $node->le, $node->ri, $node->payload);
  read  => $node = (object) unpack("fvalue/nre/nli/a*payload", $data);

It would be interesting to benchmark both options and compare the results.