CODEWITHSUNDEEP
php
Istiaque Ahmed
Istiaque Ahmed

Reputation: 6498

php string comparison considering spaces in between

in php i need to compare 2 strings.

str1="this is             a       string"
str2=" this is a string  "

I want to consider str1 and str2 to be the same string.

The way I can think is:

trim the strings first. extract the words of each string first, compare the words and then get the result.

Any better way i.e. bulit-in function or something else to make the comparison?

Upvotes: 3

Views: 4289

Answers (2)

Tadeck
Tadeck

Reputation: 137420

Just use preg_replace() function and trim() function. The following:

<?php
$str1 = "this is             a       string";
$str2 = " this is a string  ";
$str1 = preg_replace('/\s+/', ' ', trim($str1));
$str2 = preg_replace('/\s+/', ' ', trim($str2));
var_dump($str1, $str2);

will output two identical strings:

string(16) "this is a string"
string(16) "this is a string"

See this codepad as a proof.

Upvotes: 10

Niet the Dark Absol
Niet the Dark Absol

Reputation: 324760

What's wrong with $str = preg_replace("/ +/"," ",$str);? Just collapse multiple spaces into one...

Also, please start accepting answers on your older questions.

Upvotes: 2

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