Fix Integer value having 15-18 digits casted into E+ float format unn…

[kd9951]

…ecessary

small value casted integer correctory, value bigger than PHP_INT_MAX handled as string, but 14-16 digits numeric string is casted in float and turnd out as E+ format.

This is:

- [x] a bugfix
- [ ] a new feature

Checklist:

• Changes are covered by unit tests
• Code style is respected
• Commit message explains why the change is made (see https://github.com/erlang/otp/wiki/Writing-good-commit-messages)
• CHANGELOG.md contains a short summary of the change
• Documentation is updated as necessary

Why this change is needed?

wrong

"999999999"
"9999999999"
"99999999999"
"999999999999"
"9999999999999"
"99999999999999"
"1.0E+15"
"1.0E+16"
"1.0E+17"
"1.0E+18"
"9999999999999999999"
"99999999999999999999"

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
If this is still an issue for you, please try to help by debugging it further and sharing your results.
Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
If this is still an issue for you, please try to help by debugging it further and sharing your results.
Thank you for your contributions.