<code><span class="hljs-variable">$string</span>=<span class="hljs-string">"olá à mim! ñ"</span>;<span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">tirarAcentos</span>(<span class="hljs-params"><span class="hljs-variable">$string</span></span>)</span>{    <span class="hljs-keyword">return</span> preg_replace(<span class="hljs-keyword">array</span>(<span class="hljs-string">"/(á|à|ã|â|ä)/"</span>,<span class="hljs-string">"/(Á|À|Ã|Â|Ä)/"</span>,<span class="hljs-string">"/(é|è|ê|ë)/"</span>,<span class="hljs-string">"/(É|È|Ê|Ë)/"</span>,<span class="hljs-string">"/(í|ì|î|ï)/"</span>,<span class="hljs-string">"/(Í|Ì|Î|Ï)/"</span>,<span class="hljs-string">"/(ó|ò|õ|ô|ö)/"</span>,<span class="hljs-string">"/(Ó|Ò|Õ|Ô|Ö)/"</span>,<span class="hljs-string">"/(ú|ù|û|ü)/"</span>,<span class="hljs-string">"/(Ú|Ù|Û|Ü)/"</span>,<span class="hljs-string">"/(ñ)/"</span>,<span class="hljs-string">"/(Ñ)/"</span>),explode(<span class="hljs-string">" "</span>,<span class="hljs-string">"a A e E i I o O u U n N"</span>),<span class="hljs-variable">$string</span>);}<span class="hljs-keyword">echo</span> tirarAcentos(<span class="hljs-variable">$string</span>);</code>