Question

您好我正在尝试检查字符串中是否存在单词列表（或其中任何一个单词）。我尝试了一些我在这里找到的例子，但我还是无法让它正常工作。

任何想法我做错了什么？

$ss3="How to make a book";
    $words = array ("book","paper","page","sheet");
    if (in_array($ss3, $words) )
{
    echo "found it"; 
}

Answer 1

循环遍历数组，检查字符串

中是否存在每个元素

$ss3="How to make a book";
$words = array ("book","paper","page","sheet");
foreach($words as $w){
  if (stristr($ss3,$w)!==false)
   echo "found $w \n"; 
}

<强> Fiddle

Answer 2

您需要explode() $ss3字符串，然后将每个项目与$words循环进行比较

in_array - http://php.net/manual/en/function.in-array.php

手册

explode() - http://php.net/manual/ru/function.explode.php

手册

$matches = array();
$items = explode(" ",$ss3);
foreach($items as $item){
  if(in_array($item, $words)){         
     $matches[] = $item; // Match found, storing in array
  }
} 

var_dump($matches); // To see all matches

Answer 3

这是检查字符串中是否存在单词的方法。另请记住，您必须首先将字符串转换为小写，然后将其展开。

$ss3="How to make a book";
$ss3 = strtolower($ss3);
$ss3 = explode(" ", $ss3);
    $words = array ("book","paper","page","sheet");
    if (in_array($ss3, $words) )
{
    echo "found it"; 
}

干杯！

Answer 4

您可以将str_word_count与array_intersect一起使用，如

$ss3="How to make a book";
$words = array ("book","paper","page","sheet");
$new_str_array = str_word_count($ss3,1);
$founded_words = array_intersect($words,$new_str_array);
if(count($founded_words) > 0){
    echo "Founded : ". implode(',',$founded_words);
}else{
    echo "Founded Nothing";
}

Demo

Answer 5

您可以使用正则表达式。它看起来像这样：

$ss3 = "How to make a book";

 if (preg_match('/book/',$ss3))
     echo 'found!!';

Answer 6

in_array只会检查数组中的完整字符串值。现在你可以试试这个：

$string = 'How to make a book';
$words = array("book","paper","page","sheet");
foreach ($words as $val) {
    if (strpos($string, $val) !== FALSE) {
        echo "Match found"; 
        return true;
    }
}
echo "Not found!";

Answer 7

此代码将帮助您更好地回答

    <?php
    $str="Hello World Good";
    $word=array("Hello","Good");
    $strArray=explode(" ",$str);
   foreach($strArray as $val){
   if(in_array($val,$word)){
   echo $val."<br>";
   }
   }

 ?>

检查字符串中是否存在单词列表

7 个答案: