PHP如何从文本区域[关闭]读取[您的名字]

Question

Check this:

Dear [NAME],
<br /><br />
Someone (hopefully you) requested a password reset at [SITE_URL].
<br /><br />
To reset your password, please follow the following link: [EMAIL_LINK]

---

in above lines there are names of the fields in [ ] in a text area of my php user management for email template. Please tell me how PHP read i.e [NAME] this....? is there a function.. if yes what is it and how...? i hope you all can understand what i wanna know...

Thanks

Best Regards

Answer 1

You can use preg_match_all to match all the keywords wrapped by square brackets:

$text = 'Dear [NAME],
<br /><br />
Someone (hopefully you) requested a password reset at [SITE_URL].
<br /><br />
To reset your password, please follow the following link: [EMAIL_LINK]';

preg_match_all('/\[([A-Z_]+)\]/', $text, $matches);

By var_dumping the $matches variable you will get:

array(2) {
  [0]=>
  array(3) {
    [0]=>
    string(6) "[NAME]"
    [1]=>
    string(10) "[SITE_URL]"
    [2]=>
    string(12) "[EMAIL_LINK]"
  }
  [1]=>
  array(3) {
    [0]=>
    string(4) "NAME"
    [1]=>
    string(8) "SITE_URL"
    [2]=>
    string(10) "EMAIL_LINK"
  }
}

So, let's suppose you will have an array of keywords to be replaced:

$keywords = array(
    'NAME' => 'Mihai MATEI',
    'SITE_URL' => 'http://example.com/',
    'EMAIL_LINK' => '<a href="mailto:[e-mail]">[e-mail]</a>',
);

You can replace the keywords in the template as:

foreach ($matches[1] as $key => $keyword) {
    $text = str_replace($matches[0][$key], $keywords[$keyword], $text);
}

Now if you var_dump the $text variable will get:

Dear Mihai MATEI,
<br /><br />
Someone (hopefully you) requested a password reset at http://example.com/.
<br /><br />
To reset your password, please follow the following link: <a href="mailto:[e-mail]">[e-mail]</a>