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php ini serialize_precision
The serialize_precision directive determines the number of digits stored after the floating point when doubles and floats are serialized. Setting this to an appropriate value ensures that the precision is not potentially lost when the numbers are later unserialized.
serialize_precision = 100
When floats & doubles are serialized store serialize_precision significant digits after the floating point. The default value ensures that when floats are decoded with unserialize, the data will remain the same.
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