PHP -在两种情况下都在数组返回值中查找字符串中的数组单词

Question

问题

我有两个数组。数组包含单词，另一个数组包含字符串。我已经写了一个代码，可以在字符串中找到这个单词。如果在字符串中找到其中一个单词。我把话还给你。但是，如果在字符串中找到数组中的no，我也希望返回一个值。我写了几个代码，结果总是出现同样的情况。

这些案件是：

• 当没有匹配的时候我没有价值
• 我从之前的结果中得到了值。
• 我得到了所有的价值匹配而没有匹配

问题

我哪里搞错了。如果找到，如何为每个字符串存储单词，如果未找到，则将值设置为缺失值。

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"; 
}

在web浏览器中的结果：

人-人白细胞介素2 (IL2)a NA-氨苄西林耐药基因a 小鼠amp基因

初试

# 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

   } 

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
}

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

仅仅以你的第一个版本作为基础，就会出现一些问题。您没有重置用于存储匹配的字段，所以下一次它仍然有前一个循环中的匹配。

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
}

或者您可以依赖于设置虚拟值，然后只有在找到真正匹配的情况下才会覆盖.

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在物种循环中以不区分大小写的方式进行匹配。

然后使用array_diff从$cdna中删除项目，以确保不再匹配或浪费时间。

循环后的$cdna中剩下的是不匹配的项，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