PHP: Split string into 2 after length 700 and . (period)
<p>I cant seem to figure the best approach to a PHP problem. I want to accomplish the following</p>

<ol>
<li>I get a string that is, ie. 1000 characters in lenght</li>
<li>I want to split a string into 2.</li>
<li>The first string need to be 600 characters based on the following condition:
a) String should only be split if after a period</li>
<li>The second section of the string can be the remainder.</li>
</ol>

<p>I know how to check the length of a string <code>strlen($string)</code> and I know how to explode a string into substrings using ie. <code>explode()</code>. However, I am not sure how to bring everything together.</p>
