chmod

Example

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token comment">// The owner can read and write, and others do not have any permissions</span>
<span class="token function">chmod</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">,</span> <span class="token number">0600</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token comment">// The owner can read and write, and others can read</span>
<span class="token function">chmod</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">,</span> <span class="token number">0644</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token comment">// The owner has all permissions, which can be read and executed by everyone else</span>
<span class="token function">chmod</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">,</span> <span class="token number">0755</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>

<span class="token comment">// The owner has all permissions, and the group where the owner is located can be readable</span>
<span class="token function">chmod</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"test.txt"</span> <span class="token punctuation">,</span> <span class="token number">0740</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>