ksort
Sort arrays by key names
Sort the associative array by key name:
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$age</span> <span class="token operator">=</span> <span class="token keyword">array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Bill"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"60"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Steve"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"56"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"mark"</span> <span class="token operator">=></span> <span class="token string double-quoted-string">"31"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token function"></span></span><mark><span class="token function">ksort</span> <span class="token punctuation">(</span> <span class="token variable">$age</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span>