Hi
Igbinary is a drop in replacement for the standard php serializer. Instead of the time and space consuming textual representation used by PHP's serialize, igbinary stores php data structures in a compact binary form. Memory savings are significant when using memcached, APCu, or similar memory based storages for serialized data. The typical reduction in storage requirements are around 50%. The exact percentage depends on your data.
Unserialization performance is at least on par with the standard PHP serializer, and is much faster for repetitive data. Serialization performance depends on the igbinary.compact_strings option which enables duplicate string tracking. String are inserted to a hash table, which adds some overhead when serializing. In usual scenarios this does not have much of an impact, because the typical usage pattern is "serialize rarely, unserialize often". With the compact_strings option enabled, igbinary is usually a bit slower than the standard serializer. Without it, igbinary is a bit faster.
https://github.com/igbinary/igbinary
igbinary extension memory savings are significant when using memcached, APCu, or similar memory based storages for serialized data. The typical reduction in storage requirements are around 50%. The exact percentage depends on your data.
