如何在搜索单词中找到字符串后的位置，然后标记

Question

我将在字符串中找到所需的单词，然后我显示标记或突出显示

$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';
查找之后 ->这是用于"测试"测试"功能的"测试"

Answer 1

似乎很复杂。您不必将整个文本分开即可进行替代：

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

如果您只想搜索整个单词，则正则表达式可能会帮助您：

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

Answer 2

您可以尝试以下方法：

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

Answer 3

$term="testing a test";
function search_array($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;