How Can I Replace Multiple Spaces with a Single Space After `ereg_replace` Is Deprecated?

Replacing Multiple Spaces with a Single Space: Deprecating ereg_replace

While using ereg_replace to replace multiple spaces with a single space may seem straightforward, it has been deprecated. Consequently, you may encounter errors when attempting to utilize it. This article presents an alternative solution.

Migration to preg_replace()

To replace ereg_replace, switch to preg_replace(). Instead of employing the [ tnr] pattern, which matches multiple spaces, tabs, newlines, and carriage returns, use s . This shorthand character class encompasses all whitespace characters, effectively replacing multiple spaces with a single space.

Code Example

Implement the following code to achieve the desired result:

$output = preg_replace('!\s+!', ' ', $input);

Explanation

• preg_replace('!s !', ' ', $input) scans the $input string for multiple whitespace characters using the s pattern.
• It replaces any sequence of consecutive whitespace characters with a single space, producing the $output string.

Additional Resource

Refer to the Regular Expression Basic Syntax Reference for further clarification on d, w, and s character classes:

https://www.php.net/manual/en/regexp.reference.basic-syntax.php

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