Chapter

String Functions

From ComputerScienceOne by Dr Chris Bourke

Concepts

1. How can you add or remove characters from a PHP string?

   "The last line extends the string by adding an additional character. You can even remove characters by setting them to the empty string.\n\n1 $a = \"Apples!\";\n\n2 $a[5] = \"\";\n\n3 //a is now \"App

2. How can you determine the length of a PHP string?

   "PHP provides dozens of convenient functions that allow you to process and modify strings. We highlight a few of the more common ones here. A full list of supported functions can be found in standard

3. How do you concatenate strings in PHP?

   "PHP has a concatenation operator built into the language. To concatenate one or more strings together, you can use a simple period between them as the concatenation operator. Concatenation results in

4. How can you compute a substring in PHP?

   "PHP provides a simple function, substr() to compute a substring of a string. It takes at at least 2 arguments: the string to operate on and the starting index. There is a third, optional parameter th