Check if any array values are present at the end of a string

Question

I am trying to test if a string made up of multiple words and has any values from an array at the end of it. The following is what I have so far. I am stuck on how to check if the string is longer than the array value being tested and that it is present at the end of the string.

$words = trim(preg_replace('/\s+/',' ', $string));
$words = explode(' ', $words);
$words = count($words);

if ($words > 2) {
    // Check if $string ends with any of the following
    $test_array = array();
    $test_array[0] = 'Wizard';
    $test_array[1] = 'Wizard?';
    $test_array[2] = '/Wizard';
    $test_array[4] = '/Wizard?';

    // Stuck here
    if ($string is longer than $test_array and $test_array is found at the end of the string) {
      Do stuff;
    }
}

user775263 · Accepted Answer · 2011-06-05 15:18:01Z

2

By end of string do you mean the very last word? You could use preg_match

preg_match('~/?Wizard\??$~', $string, $matches);
echo "<pre>".print_r($matches, true)."</pre>";

answered Jun 5, 2011 at 15:18

user775263

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1 Comment

Matthew Over a year ago

This works great! I added ignore case, but this is simple and gets the job done. if (preg_match('~/?Wizard\??$~i', $string)) {

soulmerge · Accepted Answer · 2011-06-05 15:18:03Z

2

I think you want something like this:

if (preg_match('/\/?Wizard\??$/', $string)) { // ...

If it has to be an arbitrary array (and not the one containing the 'wizard' strings you provided in your question), you could construct the regex dynamically:

$words = array('wizard', 'test');
foreach ($words as &$word) {
    $word = preg_quote($word, '/');
}
$regex = '/(' . implode('|', $words) . ')$/';
if (preg_match($regex, $string)) { // ends with 'wizard' or 'test'

answered Jun 5, 2011 at 15:18

soulmerge

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1 Comment

Matthew Over a year ago

Thanks for this, the second part in regards to arbitrary arrays will be helpful for something I need to do in the near future.

Oliver Salzburg · Accepted Answer · 2011-06-05 15:14:11Z

0

Is this what you want (no guarantee for correctness, couldn't test)?

foreach( $test_array as $testString ) {
  $searchLength = strlen( $testString );
  $sourceLength = strlen( $string );

  if( $sourceLength <= $searchLength && substr( $string, $sourceLength - $searchLength ) == $testString ) {
    // ...
  }
}

I wonder if some regular expression wouldn't make more sense here.

answered Jun 5, 2011 at 15:14

Oliver Salzburg

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