trim

Example

Example 1

Remove characters on both sides of the string ("He" in "Hello" and "d!" in "World"):

 <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">trim</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hed!"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

Try it yourself

Example 2

Remove spaces on both sides of the string:

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

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

Try it yourself

Example 3

Remove the newline character (\n) on both sides of the string:

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


Hello World <span class="token operator">!</span>


<span class="token operator"><</span> br <span class="token operator">></span> Use trim <span class="token punctuation">:</span> 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 is as follows:

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

Try it yourself