如何爲字符串寫入reg exp具有類似a-b-1和a-b-1/d-e-2的結構？

Question

對不起，我的英語不好。我有一個問題，我想比較兩個不同的字符串使用reg exp。第一個字符串的結構像a-b-1，例如：mobile-phone-1。而第二個字符串的結構像a-b-1/d-e-2，例如：mobile-phone-1/nokia-asha-23。我該怎麼做？您可以使用preg_match（）方法或其他方法...此方法用於兩個不同的字符串。非常感謝！

代碼演示：

if (preg_match("reg exp 1", string1)) { // do something } 
if (preg_match("reg exp 2", string2)) { // do something } 

P/S：不要太在意代碼演示

Answer 1

$pattern = '#[\w]+-[\w]+-[\d]+(/[\w]+-[\w]+-[\d]+)?#'; 
if (preg_match($pattern, $str, $matches)){ 
    return $matches; 
} 

爲了配合較短的字符串使用：

$pattern = '#[\w]+-[\w]+-[\d]+#'; 

要匹配更長：

$pattern = '#[\w]+-[\w]+-[\d]+/[\w]+-[\w]+-[\d]+#'; 

要使用甚至更短劃線匹配較長：

$pattern = '#[\w]+-[\w]+-[\d]+/[\w-]+[\d]+#'; 

Answer 2

if(preg_match("/^([a-z]+)-([a-z]+)-([0-9]+)$/i",$string1)) 

if(preg_match("/^([a-z]+)-([a-z]+)-([0-9]+)\/([a-z]+)-([a-z]+)-([0-9]+)$/i",$string2)) 

'i' 的到底是用於區分大小寫。

Answer 3

正則表達式與解釋。一步一步解決。

$text1='mobile is for you--phone-341/nokia-asha-253'; //sample string 1 
$text2='mobile-phone-341'; //sample string 2 

    $regular_expression1='(\w)'; // Word    (mobile) 
    $regular_expression2='(-)'; // Any Single Character   (-) 
    $regular_expression3='(\w)'; // Word    (phone) 
    $regular_expression4='(-)'; // Any Single Character   (-) 
    $regular_expression5='(\d+)'; // Integer Number   (341) 

    $regular_expression6='(\/)'; // Any Single Character   (/) 

    $regular_expression7='(\w)'; // Word    (nokia) 
    $regular_expression8='(-)'; // Any Single Character   (-) 
    $regular_expression9='(\w)'; // Word    (asha) 
    $regular_expression10='(-)'; // Any Single Character   (-) 
    $regular_expression11='(\d)'; // Integer Number   (253) 

    if ($c=preg_match_all ("/".$regular_expression1.$regular_expression2.$regular_expression3.$regular_expression4.$regular_expression5.$regular_expression6.$regular_expression7.$regular_expression8.$regular_expression9.$regular_expression10.$regular_expression11."/is", $text1)) 
    { 
    echo "a-b-1/d-e-2 format string"; 
    } 
    else 
    { 
    echo "Not in a-b-1/d-e-2"; 
    } 
    echo "<br>------------------------<br>"; //just for separation 

if ($c=preg_match_all ("/".$regular_expression1.$regular_expression2.$regular_expression3.$regular_expression4.$regular_expression5."/is", $text2)) 
    { 
    echo "a-b-1 formate string"; 
    } 
    else 
    { 
    echo "Not in a-b-1 format"; 
    }