Remove city from team name - php

Question

I have these variables:
$cities = [
'New York City',
'Arizona State',
'Arkansas State'
];
$teams = [
'New York Mets',
'New York Yankees',
'Arizona State Sun Devils',
'Arkansas State Red Wolves'
];
How can I format the $teams array into the following:
$teams = [
'Mets',
'Yankees',
'Sun Devils',
'Red Wolves'
];
Thanks!

Answer 1

there are a dozen options, here is one, wont work if you have a any word in the city list that matches any word in the team list you want to keep. But will work for the data provided.
<?php
$cities = [
'New York City',
'Arizona State',
'Arkansas State'
];
$teams = [
'New York Mets',
'New York Yankees',
'Arizona State Sun Devils',
'Arkansas State Red Wolves'
];
$r=implode($cities,'|');//join the cities
$r=str_replace(' ','|',$r);//separate each word with | for the regular expression
$out=preg_replace('#'.$r.'#','',$teams); // regular expression replace

Answer 2

use the function str_replace. example:
<?php
$teams = [
'New York Mets',
'New York Yankees'
];
$out = str_replace('New York', '', $teams);
print_r($out); // Output: Array ( [0] => Mets [1] => Yankees )
?>

Answer 3

str_replace() can do the work for you, as it accepts arrays as parameters too. However, you'll run into an issue with New York City. If you're not able to either rename it to New York, or add New York as a separate element, you need to remove that first (with the str_replace()-line after the $city declaration), before you supply the $city to the str_replace() where you replace out the cities with empty strings.
$cities = [
'New York City',
'Arizona State',
'Arkansas State'
];
$cities = str_replace("City", "", $cities);
$teams = [
'New York Mets',
'New York Yankees',
'Arizona State Sun Devils',
'Arkansas State Red Wolves'
];
// Replace cities in $cities to an empty string in the $teams array
$teams = str_replace($cities, "", $teams);
$teams = array_map("trim", $teams); // Trim away the excessive spaces
print_r($teams);
Output:
Array (
[0] => Mets
[1] => Yankees
[2] => Sun Devils
[3] => Red Wolves
)
Live demo
PHP.net on str_replace()