PHP Chapter 2.
Strings

Capitalizing a string

PHP natively supports various functions to capitalize strings, each serving a different purpose.

In PHP, concatenating is all about the dot (`.’).

PHP uses strtolower to make all characters in a string lower case.

PHP uses the preg_replace function to delete characters that match a pattern using regular expressions.

PHP offers several functions to extract substrings.

Use the strlen() function like this.

In PHP, you can interpolate strings using double quotes or heredoc syntax.

Here’s a straightforward example using PHP’s built-in functions.

Here’s a quick way to replace ‘cat’ with ‘dog’ in a sentence using PHP.

PHP supports regular expressions through the PCRE (Perl Compatible Regular Expressions) library, offering a rich set of functions.