A string variable is used to store and manipulate text.
String variables are used for values that contains characters.
In this chapter we are going to look at the most common functions and operators used to
manipulate strings in PHP.
After we create a string we can manipulate it. A string can be used directly in a function or it
can be stored in a variable.
Below, the PHP script assigns the text "Hai Everyone" to a string variable called
The output of the code above will be:
Now, lets try to use some different functions and operators to manipulate the string.
There is only one string operator in PHP.
The concatenation operator (.) is used to put two string values together.
To concatenate two string variables together, use the concatenation operator:
If we look at the code above you see that we used the concatenation operator two times. This is
because we had to insert a third string (a space character), to separate the two strings.
The strlen() function is used to return the length of a string.
Let's find the length of a string:
The length of a string is often used in loops or other functions, when it is important to know
when the string ends. (i.e. in a loop, we would want to stop the loop after the last character
in the string).
The strpos() function is used to search for character within a string.
If a match is found, this function will return the position of the first match. If no match is
found, it will return FALSE.
Let's see if we can find the string "world" in our string:
The position of the string "world" in our string is position 6. The reason that it is 6
(and not 7), is that the first position in the string is 0, and not 1.
For a complete reference of all string functions, go to our complete
PHP String Reference.
The reference contains a brief description, and examples of use, for each function
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