Question

我正在尝试获取PHP中两个字符串之间交集的第一段。这样的事情：

$a = 'Metric Bob Foundation A5, Lined, Pink &amp; Orange';
$b = 'Metric Bob Foundation A5, Lined, Navy &amp; Green';
echo SOME_FUNCTION($a, $b);

// Expected output: 'Metric Bob Foundation A5, Lined, '

任何人都可以帮助我使用SOME_FUNCTION。

我在这里使用过这个：

function string_intersect($string1, $string2)
{
    $array1 = $array2 = array();

    for($i = 0, $j = 0, $s1_len = strlen($string1), $s2_len = strlen($string2);($i < $s1_len) || ($j < $s2_len); $i++, $j++) {
        if($i < $s1_len) {
            $array1[] = $string1[$i];
        }
        if($j < $s2_len) {
            $array2[] = $string2[$j];
        }
    }

    return implode('', array_intersect($array1, $array2));
}

但它返回： // Metric Bob Foundation A5，Lined，in＆amp; RANE

哪个不太对。正如我所说，我只想要第一段。

提前致谢。

Answer 1

Demo

function some_function($a, $b)
{
    $result = '';
    $len = strlen($a) > strlen($b) ? strlen($b) : strlen($a);
    for($i=0; $i<$len; $i++)
    {
        if(substr($a, $i, 1) == substr($b, $i, 1))
        {
            $result .= substr($a, $i, 1);
        }
        else
        {
            break;
        }
    }
    return $result;
}

$a = 'Metric Bob Foundation A5, Lined, Pink &amp; Orange';
$b = 'Metric Bob Foundation A5, Lined, Navy &amp; Green';
echo some_function($a, $b);

输出

Metric Bob Foundation A5, Lined,

Answer 2

function compString($a, $b){
    $arr = explode(" ", $a);
    $brr = explode(" ", $b);
    $final = array();
    for($i=0 ; $i < count($arr); $i++)
    {
        if($arr[$i] == $brr[$i])
            $final[] = $arr[$i];
        else
            break;
    }
    echo implode(" ", $final);
}

用法

$a = 'Metric Bob Foundation A5, Lined, Pink &amp; Orange';
$b = 'Metric Bob Foundation A5, Lined, Navy &amp; Green';
compString($a, $b);

Answer 3

试试这个，

 <?php
 function get_match($a, $b)
 {
 $tmp='';
 $a=str_split($a);
 $b=str_split($b);
 foreach($a as $key => $data)
 {
   if($data==$b[$key])
 $tmp.=$data;
else
 return $tmp;   
  }
 return $tmp;
}
$a = 'Metric Bob Foundation A5, Lined, Pink &amp; Orange';
$b = 'Metric Bob Foundation A5, Lined, Navy &amp; Green';
echo get_match($a, $b);


?>

<强>输出

 Metric Bob Foundation A5, Lined,

Answer 4

function getIntersection ($str1,$str2)
{
    //get the min length of str1 & str2
    $l = strlen($str1) <= strlen($str2)? strlen($str1):strlen($str2);
    $intersection = "";
    //substring length
    $i = 0;
    while($i < $l && (substr($str1,0,$i) == substr($str2,0,$i) ))
    {
        $i++;
    }
    return substr($str1,0,$i-1);
}
$a = 'Metric Bob Foundation A5, Lined,sdf Pink &amp; Orange';
$b = 'Metric Bob Foundation A5, Lined, Navy &amp; Green';
echo getIntersection ($a, $b);

输出：

Metric Bob Foundation A5，Lined，

Demo Link

第一段两个字符串之间的交集

4 个答案: