rtrim

Example

Example 1

Remove characters from the right side of the string:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Hello World!"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token variable">$str</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">rtrim</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"World!"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

Try it yourself

Example 2

Remove the space to the right of the string:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Hello World!"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Don&#39;t use rtrim:"</span> <span class="token operator">.</span> <span class="token variable">$str</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Use rtrim:"</span> <span class="token operator">.</span> <span class="token function">rtrim</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

The HTML output of the above code is as follows (see the source code):

 <span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DOCTYPE</span> html <span class="token operator">></span>
<span class="token operator"><</span> html <span class="token operator">></span>
<span class="token operator"><</span> body <span class="token operator">></span>

Don&#39;t use rtrim: Hello World <span class="token operator">!</span> <span class="token operator"><</span> br <span class="token operator">></span> Use rtrim: Hello World <span class="token operator">!</span>
<span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span>
<span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>

The browser output of the above code:

 Don't use rtrim: Hello World!
Use rtrim: Hello World!

Try it yourself

Example 3

Remove the newline character (\n) to the right of the string:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Hello World!\n\n\n"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Don&#39;t use rtrim:"</span> <span class="token operator">.</span> <span class="token variable">$str</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token string double-quoted-string">"Use rtrim:"</span> <span class="token operator">.</span> <span class="token function">rtrim</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

The HTML output of the above code is as follows (see the source code):

 <span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DOCTYPE</span> html <span class="token operator">></span>
<span class="token operator"><</span> html <span class="token operator">></span>
<span class="token operator"><</span> body <span class="token operator">></span>

Don&#39;t use rtrim: Hello World <span class="token operator">!</span>


<span class="token operator"><</span> br <span class="token operator">></span> Use rtrim: Hello World <span class="token operator">!</span>
<span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span>
<span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>

The browser output of the above code:

 Don't use rtrim: Hello World!
Use rtrim: Hello World!

Try it yourself