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Remove All Special Characters From String PHP

Last Updated : Jul 1, 2023

Remove All Special Characters From String PHP

In this tutorial we will show you the solution of remove all special characters from string PHP, here for example, if we get a string from a user and want to remove special characters from that string, then this article is helpful.

Now, let us see how we can be done this.

Step By Step Guide On Remove All Special Characters From String PHP :-

In PHP, there are many ways with help of which we can remove special characters from the string. In this article, we are going to use two from them that are

  • str_replace()
  • preg_replace()

Now, let us see how to use these functions to remove special characters with help of codes.

<?php
// Function to remove the all special characters from strings in php
function removefunction($string) {
 // first way – using str_replace() function
$result = str_replace( array('\'','"',',',';','<','>'),'', $string);
  return $result;
 }
// example is here
$ string = "Example,to remove<the>Special'Char’ using str_replace() function ;";
$final_result = removefunction($string);
echo $ final_result;
?>
// another example using another function
<?php
// Function to remove the special characters
function removefunction ($string){
 $result = preg_replace('/[^a-zA-Z0-9_ -]/s',' ',$ string);
 return $ result;
}
$string = "Example,to remove<the>Special'Char using preg_replace() function. is here.;";
$final_result = removefunction ($string);
echo $final_result;
?>
  1. The first function that is str_replace() is used here to remove special characters from strings in PHP. This function is generally used to replace the characters with whitespace. Hence, in this way we can use remove special characters.
  2. Now, in the next method we have done using the preg_replace() function. It helps us to remove special characters by its nature that is it helps to find out the expression that and we feed and replace them. Hence, in this way we use both these functions to remove special characters.
  3. Now, let us understand the examples now. Here, as we see in both examples, we create a function in which we give an argument for a string and used the required functions inside our custom functions.
  4. At last, we return the output to show the result to the user.
  5. Outside this function, we see that we stored a string inside a variable. We can also use a dynamic string here, which means that we have to get the string from the user and have to store that in a variable. Then we use our custom function on the variable in which we store the string. And print the result using the echo function.
  6. We can also store the result in a variable and then use echo on them to print or display the required output. We hope you understand the above codes easily using these steps. For reference, you can see the above example to see how we have done this.

Conclusion :-

At last, in conclusion, here we can say that with this article’s help we can understand how to all remove special characters from strings in PHP.

I hope this tutorial on remove all special characters from string PHP helps you and the steps and method mentioned above are easy to follow and implement.