Find and Replace Application in PHP
In Windows Notepad There is Feature of Find and Replace a Text With the Another Text.Similarly Here In this Tutorial We also Create a Find and Replace Application in PHP. For Making This We Use Some Built in Functions In PHP Like.
- strpos() – Finding the String Position.
- strlen() – Finding the String Length.
- substr_replace() – Replacing a Specific String.
Code:
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<?php $offset =0; // Setting Offset Value For String. if(isset($_POST['text']) && isset($_POST['searchfor']) && isset($_POST['replacewith'])) { $text = $_POST['text']; //Getting Text Area Value In Which String Is Entered $search = $_POST['searchfor']; // Getting String To Be Searched $replace =$_POST['replacewith'];// Getting String To Be Replace with $search_length = strlen($search);// Getting String length if(!empty($text)&&!empty($search)&&!empty($replace)) //Checking Value is Empty or Not { while($strpos = strpos($text,$search,$offset)) //Finding The Search String With While Loop { $offset = $strpos + $search_length;//Changing Offset value $text = substr_replace($text, $replace,$strpos,$search_length);// Here String is Replaced } echo '$text'; } else { echo'Please fill in all fields.'; } } ?> <form action="findandreplace.php" method="POST"> <textarea name="text" rows="6" cols="30"> Search for:<br> <input type="text" name="searchfor"><br><br> Replace with:<br> <input type="text" name="replacewith"><br><br> <input type="submit" value="Find and Replace"> </form> |
<?php
$offset =0; // Setting Offset Value For String.
if(isset($_POST['text']) && isset($_POST['searchfor']) &&
isset($_POST['replacewith']))
{
$text = $_POST['text']; //Getting Text Area Value In Which String Is Entered
$search = $_POST['searchfor']; // Getting String To Be Searched
$replace =$_POST['replacewith'];// Getting String To Be Replace with
$search_length = strlen($search);// Getting String length
if(!empty($text)&&!empty($search)&&!empty($replace)) //Checking Value is Empty or Not
{
while($strpos = strpos($text,$search,$offset)) //Finding The Search String With While Loop
{
$offset = $strpos + $search_length;//Changing Offset value
$text = substr_replace($text, $replace,$strpos,$search_length);// Here String is Replaced
}
echo '$text';
}
else
{
echo'Please fill in all fields.';
}
}
?>
<form action="findandreplace.php" method="POST">
<textarea name="text" rows="6" cols="30">
Search for:<br>
<input type="text" name="searchfor"><br><br>
Replace with:<br>
<input type="text" name="replacewith"><br><br>
<input type="submit" value="Find and Replace">
</form>