What are the ways to remove spaces in strings in php

There are two ways to remove spaces in strings in php: 1. Define the variable $str to save the string to be changed. Use the "str_replace()" function to replace all spaces with an empty string. Space, the syntax is "str_replace(' ', '', $str); 2. The "preg_replace()" function uses regular matching, the syntax is "preg_replace('/\s /', '', $str)".

The operating system of this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

How to remove spaces in strings in php There are two types:

1. Use str_replace()

$str = "This is a string with spaces.";
$new_str = str_replace(' ', '', $str);
echo $new_str; // Thisisastringwithspaces.

In the above code, a string $str containing spaces is first defined. Then we use The str_replace() function replaces all spaces with an empty string '' and stores the result in a new variable $new_str. Finally, we output the value of $new_str, which should be a version of the original string with all spaces removed .

2. Use preg_replace()

$str = "This is a string with spaces.";
$new_str = preg_replace('/\s+/', '', $str);
echo $new_str; // Thisisastringwithspaces.

In this example, use the similar function preg_replace() to replace all spaces. The difference from the previous one is, It uses the regular expression /\s / to match any whitespace character and replace it with an empty string. Syntax /\s / uses slashes to identify the beginning and end of the regular expression, \s matches any whitespace character, matches one or more matched characters.

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