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The function returns null

B
baileigh last edited by
Hello, there's a problem, a function returns null. Synthaxis seems to be fine, looking at PHP's check--- it's okay, I don't understand why.
Part of the code with function:
```
function SearchWord($query) {
    $find = "club";
    $search = strpos($query, $find);
    return $search;
}
SearchWord($getData['response']['items'][$i]['text']);

if($search == true) {

echo "Get Word<br>";

}
```
If you need to, I'll send the whole code. Maybe this variable can't be returned?
P.S. I've been checking my point in the function, it's okay. Checking if he's coming back. strpos() true/false inside the function itself - yes, returning.
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1 Reply Last reply
irl last edited by
To benefit from the function SearchWord() It's gonna have to be recorded in the variable. $searchbecause $search inside function SearchWord() and out of it are different variables.
```
function SearchWord($query){
    $find = "club";
    $search = strpos($query, $find);
    return $search;
}
$search = SearchWord($getData['response']['items'][$i]['text']);

if($search == true){

echo "Get Word<br>";

}
```
In your version, the violin will work if inside the function. SearchWord() declare the variable $search Global
```
function SearchWord($query){

global $search;

$find = "club";

$search = strpos($query, $find);

return $search;

}
```
However, a better avoidance of such practices is a bad tone that leads to many problems, especially if the annex grows and becomes large.
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[...] const hello = abc(str); if (hello) { return hello; } Several councils:Don't use it. var♪ He's angry and bit.Functions inside other functions, not that rare but unusual. In your case, I don't see a single reason why she should be inside.Use your functions to break the logic. The code block you brought is too complex.The names of variables should be more likely to speak of the variables themselves. land r Not a good choice.What's so bad? https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim ?Following these councils, and based on the code that you provided in the comments below, the following are received:function ltrim(text) { const length = text.length; for (let i = 0; i < length; ++i) { if (text[i] !== " ") { return text.slice(i); } } return ""; } function rtrim(text) { for (let i = text.length - 1; i >= 0; --i) { if (text[i] !== " ") { return text.slice(0, i + 1); } } return ""; } function trim(text) { return rtrim(ltrim(text)); } ["abc", " abc ", "abc def", " abc def ", " "].forEach( x => console.log(<${x}> -> <${trim(x)}>)); Result:<abc> -> <abc> < abc > -> <abc> <abc def> -> <abc def> < abc def > -> <abc def> < > -> <> Less of this code: it's not the best. Running the text twice, not the best thing. But we'll leave the optimization to a separate question.
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The function returns null

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