STRSTR () Lookup function, STRCHR (), STRRCHR (), Stristr ()/strpos (), Strrpos () Find string position

In a longer string this finds matching strings or characters, where STRSTR () and STRCHR () are exactly the same.

Cases:

echo strstr (' Why all you ', ' you ');

Output:

You

If you are:

echo strstr (' Why all you ', ' you ');

Then no output

The Stristr () function is not case sensitive

The STRRCHR () function outputs the string that is found and the character after the string

echo strrchr (' Why all you ', ' always ');

Output:

Always You

Interestingly, if it was

echo strrchr (' Why all you ', ' 'll ');

The output will be:

Ways

The Strpos () function returns the position of the first occurrence of a string in another string.

If the string is not found, false is returned.

Note: The function is case-sensitive. Use the Stripos () function if you want to search for case insensitive.

Echo Strpos ("Hello world!", "Wo");

Output:

6

The Strrpos () function finds the position of the last occurrence of a string in another string.

STRSTR () Lookup function, STRCHR (), STRRCHR (), Stristr ()/strpos (), Strrpos () Find string position