PHP String Exercises: Replace multiple characters from a string

Last update on June 02 2025 13:00:35 (UTC/GMT +8 hours)

23. Replace Multiple Characters in a String

Write a PHP script to replace multiple characters from the following string.

Sample String : '\"\1+2/3*2:2-3/4*3'

Sample Solution:

PHP Code:

<?php
$my_str = '\"\1+2/3*2:2-3/4*3';
// Define the original string.

echo str_replace(str_split('\\/:*?"<>|+-'), ' ', $my_str)."\n";
// Replace all occurrences of special characters with a space in the original string and output the result.
?>

Output:

1 2 3 2 2 3 4 3

Explanation:

The above PHP code snippet replaces all special characters in the string '\"\1+2/3*2:2-3/4*3' with a space.

str_split('\\/:*?"<>|+-') creates an array containing all the special characters to be replaced.
str_replace() then replaces each occurrence of these special characters with a space in the original string '$my_str'.
Finally, it echos the modified string.

Flowchart :

For more Practice: Solve these Related Problems:

Write a PHP script to replace all non-numeric symbols in a string with a space, then trim multiple spaces into one.
Write a PHP function to substitute specific punctuation characters with a single space in a given string.
Write a PHP program to use str_replace() with an array of target characters to clean a string and output the result.
Write a PHP script to replace each occurrence of certain symbols with a space and then capitalize the first letter of each resulting word.

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PHP Code Editor:

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