Check if array contains elements having elements of another array

Question

$find=array('or','and','not');
$text=array('jasvjasvor','asmasnand','tekjbdkcjbdsnot');

I have to check if text array contains any of the elements find has. I'm able to do this for single text but don't know how to do it for all texts

$counter=0;  
foreach($find as $txt){
        if (strstr($text[0], $txt)) {
        $counter++;
}

If i use this technique i'll have to run foreach number of times. Is there any other way to do this?

NOTE if array value contains or,and ,not not the whole word match

http://codepad.viper-7.com/VKBMtP

Input

$find=array('or','and','not');
$text=array('jasvjasvor','asmasn','tekjbdkcjbdsnot'); 
// array values "jasvjasvor" and "tekjbdkcjbdsnot" contains words `or,not`

Output

2 -> as two words from find array are contained in text array values

Amal · Accepted Answer · 2013-12-28 13:48:14Z

4

Use array_intersect():

if (count(array_intersect($find, $text)) >= 1) {
    // both arrays have at least one common element
}

Demo.

UPDATE: If you're trying to find how many elements in $text array contain any of the values (partial match or whole-word match) in $find array, you can use the following solution:

$counter = 0;
foreach($find as $needle) {
    foreach ($text as $haystack) {
        if(strpos($haystack, $needle) !== false) $counter++;
    }
}
echo $counter; // => 2

Demo.

edited Dec 28, 2013 at 13:48

answered Dec 28, 2013 at 13:30

Amal

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6 Comments

Ace Over a year ago

I want if array value contains or,and ,not not the whole word match

Amal Over a year ago

@Ace: I'm not sure what you're trying to achieve. Could you post the expected output in the question?

Ace Over a year ago

@AmalMurali in the question text array has jasvjasvor as value it contains word or somewhere in the string. I want to verify that if it contains the words that are in $find array

Ace Over a year ago

@AmalMurali tnx. foreach will run many number of times. Will it affect speed or functioning in any way?

Amal Over a year ago

@Ace: The inner foreach loop will execute 9 times, which is the number of array elements in $find multiplied by number of array elements in $text. If $text had 5 elements, then the inner foreach loop will execute 15 times.

|

underscore · Accepted Answer · 2013-12-28 13:30:26Z

0

$counter=0;  
foreach($find as $txt){
 foreach($txt as $value){
        if (strstr($value, $txt)) {
        $counter++;
}
}

answered Dec 28, 2013 at 13:30

underscore

6,9277 gold badges44 silver badges82 bronze badges

1 Comment

Ace Over a year ago

The code should be like codepad.viper-7.com/6UcMol. your code is working ok. but if there are lot of symbols and lot of texts it will run foreach a number of time. Is there an easy way?

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