PHP Strings :-
- They are sequences of characters, like "String operations in PHP".
- Singly quoted strings are treated almost literally, whereas doubly quoted strings replace variables with their values as well as specially interpreting certain character sequences.
- Let us consider an example:-
<html>
<body>
<?php
$x="Hi";
print("<b><i>Singly Quoted Strings</i></b><br/>");
$y='<b> $x </b>, How are U!';
print($y); print("<br/><br/>");
print("<b><i>Doubly Quoted Strings</i></b><br/>");
$y="<b> $x </b>, How are U!";
print($y);
?>
</body>
</html>
Screenshot:-
Here, $x is printed as it is, when it is declared in single-quote(' ').
The value of the variable $x is evaluated when it is declared in double-quote(" ").
- To concatenate two string variables together, we need to use the dot (.) operator.
- Consider an example:-
concatenate.php:-
<html>
<body>
<?php
$string1 = "Hello, ";
$string2 = "Learning PHP...!!!";
echo "First String :- <b> $string1 </b></br/>";
echo "Second String :- <b> $string2 </b><br/><br/>";
echo "<b><i> After Concatenation, by using dot(.) operator </i></b><br/>";
echo $string1 . " " .$string2;
?>
</body>
</html>
Screenshot:-
- strlen() function can be used in PHP, to find the length of a string.
- Consider an example:-
strlen.php:-
<html>
<body>
<?php
echo "String used :-<b> <i> Hi Everyone </i> </b><br/><br/>";
echo "The length of the String Is :- <br/>";
echo "<b>";
echo strlen("Hi Everyone");
echo "</b>";
?>
</body>
</html>
Screenshot:-
- The strpos() function is used to search for a string or character within a string.
- If a match is found in the string, this function will return the position of the first match. If no match is found, it will return FALSE.
- Consider an example:-
<html>
<body>
<?php
echo "String used :-<b> <i> Hi Everyone </i> </b><br/><br/>";
echo "The Position of the String(Every) Is :- <br/>";
echo "<b>";
echo strpos("Hi Everyone","Every");
echo "</b>";
?>
</body>
</html>
Screenshot:-
Here, the 'w' character of the 'world' string is at position 7, but it shows the position at 6.
It is so as the first position in the string is 0 and not 1.
No comments:
Post a Comment