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PHP string is a collection of characters i.e. "Hello John!". A PHP string value must stay with " ".
What is PHP string?
When a value stays within " " then it's called be PHP String. Like "Hello John!"
These are valid example of strings in PHP
<!DOCTYPE html>
<html>
<body>
<?php
$first_string = 'This is a string in single quotes';
$second_string = "This is a string in double quotes";
?>
<p>First String : <?php echo $first_string;?></p></br>
<p>Second String : <?php echo $second_string;?></p></br>
</body>
</html>
The above code produces the following results
Outputs: First String: This is a string in single quotes
Second String: This is a string in double quotes
String Concatenation Example
<!DOCTYPE html>
<html>
<body>
<?php
$first_string = 'This is a string';
$second_string = "This is another string";
?>
<p>Concatenation in PHP : <?php echo $first_string . 'And' .$second_string;?></p>
</body>
</html>
The above code produces the following results
Outputs: Concatenation in PHP: This is a string And This is another string
Some PHP Strings Function Example
<!DOCTYPE html>
<html>
<body>
<?php
$string = 'This is a string';
?>
<p>Word Count : <?php echo str_word_count($string);?></p></br>
<p>String length : <?php echo strlen($string);?></p></br>
<p>String position : <?php echo strpos($string, 'string');?></p></br>
<p>Reverse String : <?php echo strrev($string);?></p></br>
</body>
</html>
The above code produces the following results
Outputs: Word Count: 4
String length: 16
String position: 10
Reverse String: gnirts a si sihT
