PHP - Strip a specific string out of a string

问题

I've got this string, but I need to remove specific things out of it...

Original String: hr-165-34.sh-290-92.ch-215-84.hd-180-1.lg-280-64.

The string I need: sh-290-92.ch-215-84.lg-280-64.

I need to remove hr-165-34. and hd-180-1. !

EDIT: Ahh ive hit a snag!

the string always changes, so the bits i need to remove like "hr-165-34." always change, it will always be "hr-SOMETHING-SOMETHING."

So the methods im using wont work!

Thanks

回答1:

Depends on why you want to remove exactly those Substrigs...

If you always want to remove exactly those substrings, you can use str_replace
If you always want to remove the characters at the same position, you can use substr
If you always want to remove substrings between two dots, that match certain criteria, you can use preg_replace

回答2:

$str = 'hr-165-34.sh-290-92.ch-215-84.hd-180-1.lg-280-64';
$new_str = str_replace(array('hr-165-34.', 'hd-180-1.'), '', $str);

Info on str_replace.

回答3:

The easiest and quickest way of doing this is to use str_replace

$ostr = "hr-165-34.sh-290-92.ch-215-84.hd-180-1.lg-280-64";
$nstr = str_replace("hr-165-34.","",$ostr);
$nstr = str_replace("hd-180-1.","",$nstr);

回答4:

<?php    
$string = 'hr-165-34.sh-290-92.ch-215-84.hd-180-1.lg-280-64';

// define all strings to delete is easier by using an array
$delete_substrings = array('hr-165-34.', 'hd-180-1.');
$string = str_replace($delete_substrings, '', $string);


assert('$string == "sh-290-92.ch-215-84.lg-280-64" /* Expected result: string = "sh-290-92.ch-215-84.lg-280-64" */');
?>

回答5:

Ive figured it out!

$figure = $q['figure']; // hr-165-34.sh-290-92.ch-215-84.hd-180-1.lg-280-64

$s = $figure;
$matches = array();
$t = preg_match('/hr(.*?)\./s', $s, $matches);

$s = $figure;
$matches2 = array();
$t = preg_match('/hd(.*?)\./s', $s, $matches2);

$s = $figure;
$matches3 = array();
$t = preg_match('/ea(.*?)\./s', $s, $matches3);

$str = $figure;
$new_str = str_replace(array($matches[0], $matches2[0], $matches3[0]), '', $str);
echo($new_str);

Thanks guys!

来源：https://stackoverflow.com/questions/11382611/php-strip-a-specific-string-out-of-a-string

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php

string

strip