Inline Strings vs Concatenation in PHP5: Performance Comparison

In PHP5, developers often face the choice between using inline strings and concatenation for string construction. This raises the question of performance differences between these methods.

Performance Differences Between Inline Strings and Braces

The performance difference between inline strings and using curly braces ({}) for inline variables was minimal in PHP5. As indicated in the provided benchmark results, there was virtually no difference between these approaches.

Performance Differences Between Inline Strings and Concatenation

While the performance difference between inline strings and braces was negligible, there was a significant difference between these methods and straightforward concatenation using a period (.).

Conclusion

Although a performance difference once existed, it became irrelevant in PHP5 and beyond. While personal preferences may influence the choice between single quotes and double quotes, the performance implications are now insignificant.

Caution

It's important to be wary of statistics and performance benchmarks from unknown sources. As the saying goes, "Never trust a statistic you didn’t forge yourself." Verify performance differences through your own testing and avoid relying solely on external claims.