PHP – concatenate or directly insert variables in string

by

Between those two syntaxes, you should really choose the one you prefer 🙂

Personally, I would go with your second solution in such a case (Variable interpolation), which I find easier to both write and read.

The result will be the same; and even if there are performance implications, those won’t matter 1.

As a sidenote, so my answer is a bit more complete: the day you’ll want to do something like this:

echo "Welcome $names!";

PHP will interpret your code as if you were trying to use the $names variable — which doesn’t exist.
– note that it will only work if you use “” not ” for your string.

That day, you’ll need to use {}: 

echo "Welcome {$name}s!"

No need to fallback to concatenations.

Also note that your first syntax:

echo "Welcome ".$name."!";

Could probably be optimized, avoiding concatenations, using:

echo "Welcome ", $name, "!";

(But, as I said earlier, this doesn’t matter much…)

1 – Unless you are doing hundreds of thousands of concatenations vs interpolations — and it’s probably not quite the case.

More Related Contents:

  1. PHP variable interpolation vs concatenation [duplicate]
  2. How i can earn variable from string in PHP? [closed]
  3. How to include a PHP variable inside a MySQL statement
  4. How can I combine two strings together in PHP?
  5. How create an array from the output of an array printed with print_r?
  6. Mixing a PHP variable with a string literal
  7. Dollar ($) sign in password string treated as variable
  8. php String Concatenation, Performance
  9. php/mysql with multiple queries
  10. Single quotes or double quotes for variable concatenation? [closed]
  11. How to get int instead string from form?
  12. Concatenation with addition in it doesn’t work as expected
  13. Include constant in string without concatenating
  14. How to concatenate PHP variable name?
  15. Convert a String to Variable
  16. How do I pass JavaScript variables to PHP?
  17. Split a comma-delimited string into an array?
  18. Using str_replace so that it only acts on the first match?
  19. PHP Multiple Checkbox Array
  20. How do I remove all specific characters at the end of a string in PHP?
  21. Use a variable to define a PHP function
  22. What is the most efficient way to count all the occurrences of a specific character in a PHP string?
  23. How can I remove part of a string in PHP? [closed]
  24. How to convert PascalCase to snake_case?
  25. Get last whole number in a string
  26. Undefined variable problem with PHP function
  27. Remove Trailing Slash From String PHP
  28. How do you pass objects by reference in PHP 5?
  29. Measure string size in Bytes in php
  30. Limit String Length

Leave a Comment