PHP从纯文本中获取特定文本

Question

Here is the text value i am trying to search, this text don't have ant HTML in it( thats th problem HTML DOM not working)

    User Guide
    For iOS 7.1 Software
    Contents
    Chapter 1: New One

    iPhone at a Glance
    iPhone
    overview
    Accessories
    Multi-Touch screen
    Buttons
    Status icons
    Chapter 2 Second One this is long
    Chapter 3 new this is long

Ok now i am trying to get Chapter 1: New One and Chapter 2 Second One this is long kind of values, there are more Chapter to get.

I was trying PHP Simple HTML DOM, but don't know how to extract these Chapters with different format and length.

Answer 1

Did you mean something like this ...?

<?php

$lines = "    User Guide
    For iOS 7.1 Software
    Contents
    Chapter 1: New One

    iPhone at a Glance
    iPhone
    overview
    Accessories
    Multi-Touch screen
    Buttons
    Status icons
    Chapter 2 Second One this is long
    Chapter 3 new this is long";

$lines = explode("
", $lines);

foreach ($lines as $line) {
    $line = trim($line);
    if (!empty($line)) {
        if (preg_match('/Chapter \\d/', $line)) {
            echo $line ."<br>";
        }
    }
}

Outputs:

Chapter 1: New One
Chapter 2 Second One this is long
Chapter 3 new this is long