如何找到搜索词后位置转换为字符串标注这一

Question

我要找到一个字符串所需单词，然后我告诉马克或突出

$str = "this is a test for testing a test function"; 

$array = explode(' ',$str); 
$key = array_search('tes', $array); 

$tr=''; 
foreach($array as $i=>$ar){ 
    if($key == $i){ 
     $tr .= '<a style="color:red">'.$ar.'</a> '; 
    }else{ 
     $tr .= $ar.' ';  
    } 
} 
echo $tr;//this is a <a style="color:red">test</a> for <a style="color:red">testing</a> a <a style="color:red">test</a> function 

搜索 - >“TES”;
回声发现后 - >这是一个“测试”“测试”“测试”功能

Answer 1

$term="testing a test"; 
function search_array($array, $term) 
{  
    $keys=array(); 
    foreach ($array AS $key => $value) { 
     $term1 = explode(' ',$term); 
     foreach ($term1 AS $k => $t) { 
      if (stristr($value, $t) === FALSE) { 
       continue; 
      } else { 
       $keys[]=$key; 
      } 
     } 
    } 

    return $keys; 
} 
$str = "this is a test for testing a test function"; 
$array = explode(' ',$str); 
$data=search_array($array, $term); //get keys 
$tr=''; 
foreach($array as $i=>$ar){ 
    if(in_array($i,$data)){//if avialable 
     $tr .= '<a style="color:red">'.$ar.'</a> '; 
    }else{ 
     $tr .= $ar.' ';  
    } 
} 
echo $tr; 

Answer 2

看似复杂.. 你不必拆分整个文本做更换

$str = "this is a test for testing a test function"; 
$search = "tes"; 
echo str_replace($search, "<strong>$search</strong>", $str); 

如果你只是想搜索整个词，正则表达式可以帮助你

$search = "test"; 
$regex = "~\b(" . preg_quote($search, '~') . ")\b~"; 
echo preg_replace($regex, "<strong>$1</strong>", $str); 

Answer 3

你可以试试这个：

$str = "this is a test for testing a test function";   
    function search_array($array, $term) 
    { 
     $keys=array(); 
     foreach ($array AS $key => $value) { 
      if (stristr($value, $term) === FALSE) { 
       continue; 
      } else { 
       $keys[]=$key; 
      } 
     } 
     return $keys; 
    } 

    $array = explode(' ',$str); 
    $term="tes"; 
    $data=search_array($array, $term); //get keys 
    $tr=''; 
    foreach($array as $i=>$ar){ 
     if(in_array($i,$data)){//if avialable 
      $tr .= '<a style="color:red">'.$ar.'</a> '; 
     }else{ 
      $tr .= $ar.' ';  
     } 
    } 
    echo $tr; 

DEMO