通过换行和计数线循环？

Question

我有一个如下所示的字符串.我想循环通过每一行(行分隔<br />)并计算总行数.我怎样才能做到这一点？

This is line 1 <br />
And Line 2 <br />
And and line 3! <br />

我的输出应该是3

Answer 1

// count the number of times <br /> occurs in the string
substr_count( $your_string, "<br />" );