PHP使用正则表达式从字符串中提取内容

发布于 2024-11-07 22:10:50 字数 226 浏览 4 评论 0原文

我有以下字符串，我想从中提取“383-0408”，显然内容发生了变化，但零件号始终遵循字符串“Our Stk #:”，如何才能最优雅地从字符串中提取此信息？

Microchip Technology Inc.
18 PIN, 7 KB FLASH, 256 RAM, 16 I/O 

Mfr's Part #: PIC16F648A-I/SO 
Our Stk #: 383-0408

原文

I have the following String and I want to extract the "383-0408" from it, obviously the content changes but the part number always follows the String "Our Stk #:", how can I most elegantly extract this information from the string?

Microchip Technology Inc.
18 PIN, 7 KB FLASH, 256 RAM, 16 I/O 

Mfr's Part #: PIC16F648A-I/SO 
Our Stk #: 383-0408

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辞旧 2024-11-14 22:10:50

您可以这样做：

<?php

$str = "Microchip Technology Inc.
18 PIN, 7 KB FLASH, 256 RAM, 16 I/O 

Mfr's Part #: PIC16F648A-I/SO 
Our Stk #: 383-0408";

if (preg_match('/Our Stk #: (\d*-\d*)/', $str, $matches)) {
    echo $matches[1];
}

仅当您要查找的数字部分始终采用 digits-digits 形式时，此方法才有效。 @Richard86 给出了一个更通用的解决方案，可以使用任意数量和任意数量的破折号，作为您问题的另一个答案。

编辑：

为了避免破折号周围没有数字的情况，正如@Richard86在评论中所说，正则表达式应该如下所示：

if (preg_match('/Our Stk #: (\d+-\d+)/', $str, $matches)) {

You could do:

<?php

$str = "Microchip Technology Inc.
18 PIN, 7 KB FLASH, 256 RAM, 16 I/O 

Mfr's Part #: PIC16F648A-I/SO 
Our Stk #: 383-0408";

if (preg_match('/Our Stk #: (\d*-\d*)/', $str, $matches)) {
    echo $matches[1];
}

this works only if the number part you're looking for has always the form digits-digits. A more general solution, with any number and any amount of dashes is given by @Richard86 as another answer to your question.

Edit:

In order to avoid the case when no digits are around the dash, as @Richard86 said in a comment, the regular expresion should look like:

if (preg_match('/Our Stk #: (\d+-\d+)/', $str, $matches)) {

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自此以后，行同陌路 2024-11-14 22:10:50

你可以使用：

if (preg_match( '/Our Stk #: ([0-9\\-]+)/', $str, $match ))
    echo $match[1];

You could use:

if (preg_match( '/Our Stk #: ([0-9\\-]+)/', $str, $match ))
    echo $match[1];

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看轻我的陪伴 2024-11-14 22:10:50

$string = 'YOURSTRING';
$offset = strpos($string, 'Out Stk #') + 11;
$final = substr($string, $offset, 8);

如果我们不知道数字的长度，并且假设空白是数字后面的下一个字符，那么：

$string = 'YOURSTRING';
$offset = strpos($string, 'Out Stk #') + 11;
$end = strpos($string, ' ', $offset);
$final = substr($string, $offset, $end-$offset);

$string = 'YOURSTRING';
$offset = strpos($string, 'Out Stk #') + 11;
$final = substr($string, $offset, 8);

if we do not know the length of the number then and lets say whitespace is next character after the number, then:

$string = 'YOURSTRING';
$offset = strpos($string, 'Out Stk #') + 11;
$end = strpos($string, ' ', $offset);
$final = substr($string, $offset, $end-$offset);

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ㄟ。诗瑗 2024-11-14 22:10:50

<?php

$text = "Microchip Technology Inc.
18 PIN, 7 KB FLASH, 256 RAM, 16 I/O 

Mfr's Part #: PIC16F648A-I/SO 
Our Stk #: 383-0408";

preg_match('/Our Stk #: (.*)/', $text, $result);
$stk = $result[1];

?>

<?php

$text = "Microchip Technology Inc.
18 PIN, 7 KB FLASH, 256 RAM, 16 I/O 

Mfr's Part #: PIC16F648A-I/SO 
Our Stk #: 383-0408";

preg_match('/Our Stk #: (.*)/', $text, $result);
$stk = $result[1];

?>

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