PHP String Functions

What are String Functions?

String functions are built-in PHP tools used to manipulate and work with text.

strlen()

str_word_count()

Changing Case

Capitalization

str_replace()

strpos()

substr()

trim()

explode()

implode()

str_repeat()

Full Example

Why String Functions are Important

• Clean user input
• Format data
• Search and modify text
• Used in real applications

Common Mistakes

• Using the wrong function
• Forgetting return values
• Ignoring case sensitivity

Practice

Use at least three string functions to modify a string and print the result.

Need Help?

Ask the AI if you need help understanding or want to dive deeper in any topic