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PHP Exercises: Create a new string using two given strings s1, s2, the format of the new string will be s1s2s2s1 - w3resource
![Formatting Strings with PHP :: Hour 13. Working with Strings :: Part III: Getting Involved with the Code :: PHP, MySQL and Apache in 24 hours :: Programming :: eTutorials.org Formatting Strings with PHP :: Hour 13. Working with Strings :: Part III: Getting Involved with the Code :: PHP, MySQL and Apache in 24 hours :: Programming :: eTutorials.org](http://etutorials.org/shared/images/tutorials/tutorial_48/13fig03.gif)
Formatting Strings with PHP :: Hour 13. Working with Strings :: Part III: Getting Involved with the Code :: PHP, MySQL and Apache in 24 hours :: Programming :: eTutorials.org
![Formatting Strings with PHP :: Hour 13. Working with Strings :: Part III: Getting Involved with the Code :: PHP, MySQL and Apache in 24 hours :: Programming :: eTutorials.org Formatting Strings with PHP :: Hour 13. Working with Strings :: Part III: Getting Involved with the Code :: PHP, MySQL and Apache in 24 hours :: Programming :: eTutorials.org](http://etutorials.org/shared/images/tutorials/tutorial_48/13fig01.gif)