String Operations
On Day 2, we learned how to use strings. Today we will learn more string related operations.
PHP provide various functions that help us to work with strings.
Finding Length of a String
strlen() function is used to find length of a string.
strlen.php
PHP Code:
<?php
$companyName = 'FlashWebHost.com';
echo strlen($companyName);
Convert Text to Upper Case.
PHP Provide strtoupper() function to convert strings (text) to upper case.
strtoupper.php
PHP Code:
<?php
$companyName = 'FlashWebHost.com';
echo strtoupper($companyName);
Convert Text to Lower Case.
strtolower() function can convert text to lower case.
strtolower.php
PHP Code:
<?php
$companyName = 'FlashWebHost.com';
echo strtolower($companyName);
Convert First Letter of Words to Upper Case
ucwords() convert first letter of each word to upper case.
ucwords.php
PHP Code:
<?php
$myCar = 'I have a red car';
$myCar = ucwords($myCar);
echo $myCar;
echo '<br>';
$myBus = 'I HAVE A RED BUS';
$myBus = ucwords($myBus);
echo $myBus;
Replacing Text
str_replace() function in allow you to replace text in a string.
str_replace.php
PHP Code:
<?php
$myCar = 'I have a red car';
$myCar = str_replace('red', 'white', $myCar);
echo $myCar;
Here str_replace() find text 'red' and replace it with 'white' inside variable $myCar.
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