PHP - 在字符串中搜索特定值，返回相关文本

Question

I'm using a PDF reader for PHP to load a big .pdf file that will store each page as a seperate, huge string in a big array.

This results in an output like this:

"Official certificate Surname: Doe First Name: John Date of birth: 
10th of June, 1970 Place of Birth etc etc..."

How do I search for the specific text "Surname" and then select whatever text comes after that until "First Name" to return it as $var_surname. The syntax used in the .pdf file will always be the same, so I have no problem using such absolute conditions for searching for the text.

I genuinely don't know where to start. Sorry if this question feels vague, let me know if more information is required.

Answer 1

if(preg_match('/Surname:[\s]+([\w]+)[\s]+First/i', $input, $matches)){
    echo $matches[1];
}

will echo Doe