This article teach how to make some text replacements using simple PHP functions. Let's get started.
Lesson 1: Simple replace
<?php
// This is the text we will use for make replacements
$text = "Today is sunday!";
// The word that we will replace
$word = "sunday";
// The replacement
$replacement = "saturday";
// Now, we use the function ereg_replace to make the replacement
$newText = ereg_replace($word, $replacement, $text);
echo $newText;
?>
|
this will return "Today is saturday!"
Very simple no? Now you can see how useful it is:
Lesson 2: Making a smiles system
We can use the function ereg_replace to replace simple characters like ":)" and ":(" in images. See:
<?php
// The text with the smiles
$text = "I'm happy: :). I'm sad: :(.";
// Define the smiles and the images
$s[1] = ":\)"; $i[1] = "<img src=happy.gif>";
$s[2] = ":\("; $i[2] = "<img src=sad.gif>";
// Now, just replace!
for($k = 1; $k <= count($s); $k++) {
$text = ereg_replace($s[$k], $i[$k], $text);
}
echo $text;
?> |
If you have set the correct image names (for the smiles) you will not see the characters ":)" and ":(", instead of this you will see the smiles images!
That's it. You have the example, and it's very easy to make a lot of different things. Just keep trying.
Useful links: www.php.net
www.php.net/regex
