PHP determines whether the queried string exists

1. Get to know the strpos function

2. Define a string that needs to be searched

3. Use strpos() to find the first occurrence position

4. Save the file and view and print it in the browser

5. Precautions for using stropos():

Recommended tutorial: PHP video tutorial

The above is the detailed content of PHP determines whether the queried string exists. For more information, please follow other related articles on the PHP Chinese website!