How to search two strings in one string?

Question

Hi I have to search two strings in one string. For example

$string = "The quick brown fox jumped over a lazy cat";
if($string contains both brown and lazy){
  then execute my code
}

I have tried pregmatch like this,

if(preg_match("/(brown|lazy)/i", $string)){
    execute my code
}

But it enters if loop if one of them is present in the string. But i want it enter the if condition only if both of the strings are present in the parent string. How can I achieve this.

NoTE: I don't want loop over the string. (just like explode the string and foreach over the exploded array and search using strpos)

$string contains both brown and lazy Keyword here is: and. — Shomz
– Shomz, Commented Oct 30, 2014 at 5:21
If you were looking for a way to do it within the regex, this post explains how to get an 'and' effect with a regex lookahead: stackoverflow.com/questions/469913/… — Tim
– Tim, Commented Oct 30, 2014 at 5:24

GautamD31 · Accepted Answer · 2014-10-30 05:25:56Z

5

Try like

if(preg_match("/(brown)/i", $string) && preg_match("/(lazy)/i", $string)){
    execute my code
}

Yon can also try with strpos like

if(strpos($string, 'brown') >= 0 && strpos($string, 'lazy') >= 0){
    execute my code
}

edited Oct 30, 2014 at 5:25

answered Oct 30, 2014 at 5:18

GautamD31

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4 Comments

Shomz Over a year ago

Both your strpos examples were wrong: it will never return TRUE and >0 would fail if the position is 0 (the beginning of the string).

GautamD31 Over a year ago

@Shomz yes I also came to know that.Thanks for the suggestion

Shomz Over a year ago

No, it won't, it should work with zero as well. >= 0 if you don't like !== FALSE that much.

Mad Angle Over a year ago

OMG!!..How could I forgot this simple logic to use an AND Operator. Thanks @Gautam3164. Its simply rocks. I chose the first one.

Funk Forty Niner · Accepted Answer · 2014-10-30 05:51:37Z

3

Late answer, in case you wish to test for an exact match on both words:

$regex= "/\b(brown)\b[^.]*\b(lazy)\b/i";

$string = "The quick brown fox jumped over a lazy cat";

if(preg_match($regex, $string))

{
    echo 'True';
} else {
    echo 'False';
}

Or, replace it with $regex = "/(brown)[^.]*(lazy)/i"; if you don't want to test for an exact match, which is a much shorter method.

edited Oct 30, 2014 at 5:51

answered Oct 30, 2014 at 5:40

Funk Forty Niner

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3 Comments

Mad Angle Over a year ago

Thanks @Fred -ii- for your concern:)

Funk Forty Niner Over a year ago

@BlankHead You're welcome. I was testing at the time and was away from this page while doing that, which explains my late answer. If that's your +1, thanks :)

Mad Angle Over a year ago

Hey. No mention please. :)

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