Replace strval() function by using direct type casting to (string)

[mage2pratik]

Description

Direct type casting is up to 6x faster than using casting functions like strval(). So this pull request replaces the strval() functions by direct type casting to (string).

Fixed Issues (if relevant)

1. Replace strval() function by using direct type casting to (string) #16849: Replace strval() function by using direct type casting to (string)

Manual testing scenarios

N/A

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @mage2pratik. Thank you for your contribution
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[sidolov]

@magento-engcom-team combine 17671

[magento-engcom-team]

Hi @sidolov. Thank you for your request. I'm working on combining the pull requests for you

[magento-engcom-team]

@mage2pratik all pull requests have been successfully combined together:

• merged Fixed a couple of spelling mistakes #17671: Fixed a couple of spelling mistakes

[magento-engcom-team]

Hi @mage2pratik. Thank you for your contribution.
We will aim to release these changes as part of 2.3.0.
Please check the release notes for final confirmation.