How to search array item with given string

Question

i have an array:

$mainArr = ["SRI", "AIS", "GOW","SRI#AIS","SRI#GOW", "SRI#GOW#AIS"];

$strArr = ["SRI"];

i want to search the main Array with the given string Array element so that if the string is matched it should get the corresponding key,value pair.

expected o/p would be:

Array[
    0->SRI
    3->SRI#AIS
    4->SRI#GOW
    5->SRI#AIS#GOW
]

Any ideas ?

Thanks, Srinivas

k102 · Accepted Answer · 2011-07-13 08:54:31Z

1

$mainArr = array("SRI", "AIS", "GOW","SRI#AIS","SRI#GOW", "SRI#GOW#AIS");

$strArr = array("SRI");
foreach ($mainArr as $key => $value)
{
    foreach ($strArr as $str)
    {
        if (strpos($value,$str) !== false) $rez[$key] = $value;
    }
}

var_dump($rez);

output:

    array(4) { 
[0]=> string(3) "SRI" 
[3]=> string(7) "SRI#AIS" 
[4]=> string(7) "SRI#GOW" 
[5]=> string(11) "SRI#GOW#AIS" 
}

edited Jul 13, 2011 at 8:54

answered Jul 13, 2011 at 8:21

k102

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7 Comments

Srinivas Over a year ago

i dont think foreach will workout here, bcoz my original array has 4000 elements and string array contains 10 elements.is there any option like in_array ? or array_search ?

k102 Over a year ago

if u have so many elements u have to create another array where u'll store all matches. in_array and array_search can't be used straight since u don't want to find strings exactly the same as ur search pattern

Srinivas Over a year ago

i think using array filter with the logic u have mentioned with strpos will workout here, instead of using two foreach loops.

Srinivas Over a year ago

i liked your answer but not able to increase the votes since iam new member overh here. Thanks for the help :)

k102 Over a year ago

emm... i can't figure out how u can pass $strArr to the filter function

|

K6t · Accepted Answer · 2011-07-13 08:32:20Z

0

I thing i ll help u,,

$test=array();
        $mainArr = array("SRI", "AIS", "GOW","SRI#AIS","SRI#GOW", "SRI#GOW#AIS");
        $strArr = array("SRI");
        foreach ($mainArr as $key => $value)
        {
            $temp   = explode('#',$value);
            //$temp = $temp[0];
            if(in_array($temp[0],$strArr))
            $test[$key]=$value; 
        }
        echo "<pre><span style='color:black; font-size:19;'>";print_r($test);echo "</span></pre>";

answered Jul 13, 2011 at 8:32

K6t

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2 Comments

K6t Over a year ago

@k102:2nd Forecho i thing it wont nessary for his coding

k102 Over a year ago

your solution has several limitations: what if i have element like this: "SRI||AIS" or what if like this: "GOW#SRI". this is why i used two foreach

Darragh Enright · Accepted Answer · 2016-08-02 10:21:41Z

0

Use array_filter:

function filter($element)
{
    return strpos($element, 'SRI') !== false;
}

$mainArr = array("SRI", "AIS", "GOW","SRI#AIS","SRI#GOW", "SRI#GOW#AIS");
$filteredArr = array_filter($mainArr, 'filter');

edited Aug 2, 2016 at 10:21

answered Jul 13, 2011 at 8:28

Darragh Enright

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1 Comment

Darragh Enright Over a year ago

No problem :) Note that in the function you're testing with the strict inequality operator, as strpos() might return false or 0, depending on whether the substring you're looking for is not present at all, or is merely at the beginning of the string.

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