php 获取两个字符串之间的字符串
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Get string between two strings
提问by Thanh Nguyen
My string is: "reply-234-private", i want to get the number after "reply-" and before "-private", it is "234". I have tried with following code but it returns an empty result:
我的字符串是：“reply-234-private”，我想得到“reply-”之后和“-private”之前的数字，它是“234”。我曾尝试使用以下代码，但它返回一个空结果：
$string = 'reply-234-private';
$display = preg_replace('/reply-(.*?)-private/','',$string);
echo $display;
回答by sachleen
You can just explodeit:
你可以爆炸它：
<?php
$string = 'reply-234-private';
$display = explode('-', $string);
var_dump($display);
// prints array(3) { [0]=> string(5) "reply" [1]=> string(3) "234" [2]=> string(7) "private" }
echo $display[1];
// prints 234
Or, use preg_match
或者，使用preg_match
<?php
$string = 'reply-234-private';
if (preg_match('/reply-(.*?)-private/', $string, $display) === 1) {
echo $display[1];
}
回答by Kuncara Kurniawan
This article show you, How to get of everything string between two tags or two strings.
本文向您展示，如何获取两个标签或两个字符串之间的所有字符串。
http://okeschool.com/articles/312/string/how-to-get-of-everything-string-between-two-tag-or-two-strings
http://okeschool.com/articles/312/string/how-to-get-of-everything-string-between-two-tag-or-two-strings
<?php
// Create the Function to get the string
function GetStringBetween ($string, $start, $finish) {
$string = " ".$string;
$position = strpos($string, $start);
if ($position == 0) return "";
$position += strlen($start);
$length = strpos($string, $finish, $position) - $position;
return substr($string, $position, $length);
}
?>
in case your question, you can try this :
如果你的问题，你可以试试这个：
$string1='reply-234-private';
echo GetStringBetween ($string1, "-", "-")
or we can use any 'identifier string' for grab the string between the identifier string. for example:
或者我们可以使用任何“标识符字符串”来获取标识符字符串之间的字符串。例如：
echo GetStringBetween ($string1, "reply-", "-private")
回答by Chris Hymanson
Have a look at explode() function
something like this:
像这样：
$myString = 'reply-234-private';
$myStringPartsArray = explode("-", $myString);
$answer = $myStringPartsArray[1];
回答by Ravi Verma
Use php's inbuilt regex support functions preg_match_all
使用 php 内置的正则表达式支持函数 preg_match_all
this would help, suppose you want the array of strings(keys) between @@ in following example, where '/' doesn't fall in-between, you can built new example with different startan endvariable
这会有所帮助，假设您想要在以下示例中 @@ 之间的字符串（键）数组，其中 '/' 不在中间，您可以使用不同的start和end变量构建新示例
function getInbetweenStrings($start, $end, $str){
$matches = array();
$regex = "/$start([a-zA-Z0-9_]*)$end/";
preg_match_all($regex, $str, $matches);
return $matches[1];
}
$str = "C://@@ad_custom_attr1@@/@@upn@@/@@samaccountname@@";
$str_arr = getInbetweenStrings('@@', '@@', $str);
print_r($str_arr);
回答by szikael
$myString = 'reply-234-private';
echo str_replace('-','',filter_var($myString,FILTER_SANITIZE_NUMBER_INT));
That should do the job.
那应该可以完成这项工作。
回答by user2951807
If you want to do it in js, try this function -
如果你想用js来做，试试这个功能——
function getStringBetween(str , fromStr , toStr){
var fromStrIndex = str.indexOf(fromStr) == -1 ? 0 : str.indexOf(fromStr) + fromStr.length;
var toStrIndex = str.slice(fromStrIndex).indexOf(toStr) == -1 ? str.length-1 : str.slice(fromStrIndex).indexOf(toStr) + fromStrIndex;
var strBtween = str.substring(fromStrIndex,toStrIndex);
return strBtween;
}
