字符串比较，无论PHP顺序如何

Question

I want to know if there is a way to compare by means of some PHP method, and verify that two chains regardless of the order are the same,

for example:

     $string1 = "Pedro Perez";
     $string2 = "Perez Pedro";

So my question is how can I make this TRUE in a comparison. Clearly, your order makes it different.

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I ask this question because I am developing a search, and I want a comparison of $string1 and $string2 to be taken as the same value, regardless of the order they have, as long as the string has the same words

Answer 1

You can try doing this.

1. Convert the string into an array by splitting on spaces.
2. Sort the array.
3. Convert back the array into string.
4. Compare both.

In simple ways, here you go...

<?php
  $string1 = "Pedro Perez";
  $string2 = "Perez Pedro";
  $string1 = explode(" ", $string1);
  $string2 = explode(" ", $string2);
  // Update: You don't save the output of sort, as it's by reference.
  sort($string1);
  sort($string2);
  $string1 = implode(" ", $string1);
  $string2 = implode(" ", $string2);
  var_dump($string1 === $string2);
?>