PHP

Question

问题

我有两个数组。 1 个数组包含单词，另一个数组包含字符串。我写了一段代码，可以在字符串中找到这个词。如果在字符串中找到其中一个单词。我return这个词。但是如果在字符串中找到数组中的单词我也想 return 一个值。我已经写了几个代码，但我总是遇到相同的情况。

个案是：

没有匹配时我没有得到任何值
我从之前的结果中取回了值
我得到了每个值匹配但没有匹配回来

问题

我弄错了。如果找到，我如何为每个字符串存储单词，如果找不到，则该值设置为缺失值？

代码

输入

$csv_specie = array("Mouse","Human");
$CDNA = 'Human interleukin 2 (IL2)a;Ampicillin resistance gene (amp)a;Mouse amp gene';
# Split string by ; symbol into an array
  $CDNA_new = preg_split("/\b;\b/", $CDNA);

输出（我想以这样的方式结束

foreach ($CDNA_new as $string){
    $specie = $result ## Human
    echo $specie."-"$sring.  "<br \>\n"; 
}

网络浏览器中的结果：

Human-Human interleukin 2 (IL2)a

NA-Ampicillin resistance gene (amp)a

Mouse-Mouse amp gene

第一次尝试

# Go through the string
  foreach($CDNA_new as $t){
# Go through the specie array
    foreach ($csv_specie as $c){ 
# Find specie in string
        if (strpos($t, $c) !== FALSE ){ 
            $match = $c;
            $specie = $c;
        }
    }
# If no match found set values to missing values
    if (isset($specie) !== TRUE){
        $match = "NA";
        $specie = "NA";
        }
    echo "----------------------".  "<br \>\n"; 
    echo '+'.$specie.  "<br \>\n"; 
    echo '+'.$match.  "<br \>\n"; 
    echo '+'.$t.  "<br \>\n";
    # Work further with the values to retrieve gene ID using eSearch

   }

第二次尝试

# use function to find match
function existor_not($str, $character) {
    if (strpos($str, $character) !== false) {
        return $character;
    }
    return $character = "0";
}
foreach ( $CDNA_new as $string ){
    
    foreach ( $csv_specie as $keyword ){
        
        $test = existor_not($string,$keyword);
    }
    echo "-".$test."|" . $string.  "<br \>\n"; 
    # Work further with the values to retrieve gene ID using eSearch
}

第三次尝试

foreach ( $CDNA_new as $string ){
  foreach ( $csv_specie as $keyword ){
    $result = stripos($string, $keyword);
    if ($result === false) {
        $specie = "NA";
    }
    else {
        $specie = $keyword;
    }
}
if ($specie !== "NA"){
echo "match found";
}else{
   $match = "NA";
   $specie = "NA";
}
    echo $specie. "<br \>\n"; 
    # Work further with the values to retrieve gene ID using eSearch
    }

Answer 1

仅以您的第一个版本为基础，存在一些问题。您没有重置用于存储匹配项的字段，因此下一次它仍然具有上一个循环的匹配项。

您还使用了 $qspecie 并且设置了 $specie。

foreach($CDNA_new as $t){
    $match = null;    // Reset value for match
    # Go through the specie array
    foreach ($csv_specie as $c){
        # Find specie in string
        if (strpos($t, $c) !== FALSE ){
            $match = $c;
            break;       // Don't carry on if you found a match
        }
    }
    # If no match found set values to missing values
    if ($match == null){
        $match = "NA";
    }
    echo "----------------------".  "<br \>\n";
    echo '+'.$match.  "<br \>\n";
    echo '+'.$t.  "<br \>\n";
    # Work further with the values to retrieve gene ID using eSearch
}

或者您可以依靠设置虚拟值，然后只有在找到真正的匹配项时才会覆盖它...

foreach($CDNA_new as $t){
    $match = "NA";
    # Go through the specie array
    foreach ($csv_specie as $c){
        # Find specie in string
        if (strpos($t, $c) !== FALSE ){
            $match = $c;
            break;
        }
    }
    echo "----------------------".  "<br \>\n";
    echo '+'.$match.  "<br \>\n";
    echo '+'.$t.  "<br \>\n";
    # Work further with the values to retrieve gene ID using eSearch
}

Answer 2

您可以使用 preg_grep 在 specie 循环中以不区分大小写的方式进行匹配。
然后我使用 array_diff 从 $cdna 中删除项目以确保我不会再次匹配或浪费时间。
循环后留在$cdna中的是不匹配的项，我将它们添加到"N/A"项中。

$csv_specie = array("Mouse","Human");
$CDNA = 'Human interleukin 2 (IL2)a;Ampicillin resistance gene (amp)a;Mouse amp gene;Some other stuff unknown to man kind';


$csv_specie = array("Mouse","Human");
$CDNA = 'Human interleukin 2 (IL2)a;Ampicillin resistance gene (amp)a;Mouse amp gene;Some other stuff unknown to man kind;some other human stuff';

$cdna = explode(";", $CDNA);

Foreach($csv_specie as $specie){
    $matches[$specie] = preg_grep("/\b" . $specie . "\b/i", $cdna);
    Echo $specie . " - " . implode("\n" . $specie . " - " , $matches[$specie]) . "\n";

    // Remove matched items from $cdna
    // This makes $cdna smaller for each 
    // iteration and make it faster.
    $cdna = array_diff($cdna, $matches[$specie]);
}

// What is left in $cdna is not matched
$matches["N/A"] = $cdna;

Echo "\nN/A - " . implode("\nN/A - ", $matches["N/A"]);

输出：

Mouse - Mouse amp gene
Human - Human interleukin 2 (IL2)a
Human - some other human stuff

N/A - Ampicillin resistance gene (amp)a
N/A - Some other stuff unknown to man kind

https://3v4l.org/64Qmq

PHP - 在两种情况下都在数组 return 值的字符串中查找数组的单词

PHP - Find words of array in strings in array return value in both cases

arrays

matching

问题

个案是：

问题

代码

第一次尝试

第二次尝试

第三次尝试