PHP输出中限制的行或字符

Question

I got a weird Problem here, need your help. PHP Language.

Suppose I have a Output like this:

A
B
C
D
E

Now Instead of 5 Lines, I want out in 2 Lines and 3rd line will be "more" which will take him to another page for details(I know how to place anchor tag :S)

And if The ouput is like

This is a big paragraph of 5 lines or maybe more, but what I want to display is only first 100(or some first n Characters). Repeated This is a big paragraph of 5 lines or maybe more, but what I want to display is only first 100(or some first n Characters)This is a big paragraph of 5 lines or maybe more, but what I want to display is only first 100(or some first n Characters)This is a big paragraph of 5 lines or maybe more, but what I want to display is only first 100(or some first n Characters)This is a big paragraph of 5 lines or maybe more, but what I want to display is only first 100(or some first n Characters).

Instead of this I want to display only first 100 characters and then a more button which will take to a detailed page.

The Second Problem can be solved with php function substr, but what about the first one ? I need both cases to work at same place, like if input has some list(hell of newline characters) at starting then only top 2 lines will be printed And if it is a paragraph then only first 100(or some n) characters(or even words) will be printed.
Any Guesses ?

Answer 1

You can use substr and then ajax to load the whole string. But you can also use CSS to display first X lines - set height and overflow: hidden. Then again javascript to unset the height and overflow.