How to check a string for words in an array

[etrader]

I want to check if a string has any of words listed in array;

$array=array('word1', 'word2', 'word3');
$string="This is a sentence containing word2";

Now I want to make an 'if else' to check if the string contains any of the words listed in the array. Thanks 

[AtomicRax]

foreach ($array as $var) {
if(strstr($string, $var)) {
// the $string contains $var from the $array
} else {
// the $string does NOT contain $var from the array
} }

[QuickOldCar]

Might be better off using the case insensitive version if looking for words.

 

stristr()

http://www.php.net/manual/en/function.stristr.php

[AtomicRax]

QuickOldCar has a point .. I just had this snippet readily available because I'm currently using it myself.. but I have to match the case for mine program.. you can easily modify my post with the new function

[etrader]

Thank fella,

How to avoid foreach by defining a string ($var) containing the words as $var='word1|word2|word3' to check if any value matches.

[sasa]

<?php
$array=array('word1', 'word2', 'word3');
$string="This is a sentence containing word2";
if(preg_match('/\b'.  implode('\b|\b', $array).'\b/i', $string)) echo 'yes'; else echo 'no';
?>

[etrader]

Seems to be a subtle solution, but the output in all cases is "no" 

[QuickOldCar]

There's a few ways to check for items, it's all in how you set it up..what you are looking for..and what kind or results you expect. These are things you have to do unique to your project with making some checks and balances somehow.

 

Sometimes you need to use a mixture to get the exact desired results.

 

You may even have to explode the array and a foreach just to clean it up a bit before checking it.

 

some useful stuff

I usually stick to preg_match,preg_match_all,preg_quote,in_array for the most part.

http://php.net/manual/en/function.preg-match.php

http://www.php.net/manual/en/function.preg-match-all.php

http://www.php.net/manual/en/function.preg-quote.php

http://php.net/manual/en/function.array-search.php

 

The code that sasa gave is most likely what you need, you need to adjust the pattern for how you exactly want to look for items.