PHP str_replace

Question

How to str_replace

</div> 
</li> 
</ul>

to

</div> 
</li> 
</ul>
aaa

All the tags in a new line.

I tried

$str = str_replace('</div>\n\r</li>\n\r</ul>', '</div>\n\r</li>\n\r</ul>\n\raaa', $str);  

UPDATE CODE:

$str =<<<EOT
</div>
</li>
</ul>
EOT;

$str = str_replace("</div>\n\r</li>\n\r</ul>", "</div>\n\r</li>\n\r</ul>\n\raaa", $str);  

echo $str;

Answer 1

\\n in single quotes is a literal \\ and a literal n , rather than a \\n , to get the line breaks you need to use double quotes:

$str = str_replace("</div>\r\n</li>\r\n</ul>", "</div>\r\n</li>\r\n</ul>\r\naaa", $str);  

Also, you should be replacing \\r\\n not \\n\\r as Windows line breaks are a carriage return \\r followed by a line break \\n .

Answer 2

When you use single quotes the \\r\\n will be treated as string.

Use double quotes instead:

$str = str_replace("</div>\n\r</li>\n\r</ul>", "</div>\n\r</li>\n\r</ul>\n\raaa", $str); 

EDIT

Can't you just do:

$str = str_replace('</ul>', "</ul>\n\raaa", $str); 

If that isn't suited it's better to resort to rexeg.

Answer 3

First of all: Don't you just want this?

$str = $str . "\n\raaa";

Second, (see Mark Elliot's answer about single versus double quotes)

Answer 4

为什么不串连音？

$str .= "\r\naaa";