PHP에서 일반적으로 사용되는 유효성 검사 정규식

数字、手机号、QQ号、Url地址合法性校验

1.验证是否为整数

<span>1</span><span>function</span> isNumber(<span>$val</span><span>)
</span><span>2</span><span>    {
</span><span>3</span><span>if</span>(<span>ereg</span>("^[0-9]+$", <span>$val</span><span>))
</span><span>4</span><span>return</span><span>true</span><span>;
</span><span>5</span><span>return</span><span>false</span><span>;
</span><span>6</span>      }

2.验证是否为手机号

<span>1</span><span>function</span> isPhone(<span>$val</span><span>){
</span><span>2</span><span>3</span><span>if</span> (<span>ereg</span>("^1[1-9][0-9]{9}$",<span>$val</span><span>))
</span><span>4</span><span>return</span><span>true</span><span>;
</span><span>5</span><span>return</span><span>false</span><span>;
</span><span>6</span><span>7</span><span>8</span>     }

3.验证是否为有效的QQ号

<span>1</span><span>function</span> isQQ(<span>$val</span><span>){
</span><span>2</span><span>3</span><span>if</span> (<span>ereg</span>("^[1-9][0-9]{4,12}$",<span>$val</span><span>))
</span><span>4</span><span>return</span><span>true</span><span>;
</span><span>5</span><span>return</span><span>false</span><span>;
</span><span>6</span><span>7</span><span>8</span>     }

4.验证是否是合法的Url地址

<span> 1</span><span>function</span> isUrl(<span>$s</span><span>)  {  
</span><span> 2</span><span>return</span><span>preg_match</span>('/^http[s]?:\/\/'.  
<span> 3</span>             '(([0-9]{1,3}\.){3}[0-9]{1,3}'. <span>//</span><span> IP形式的URL- 199.194.52.184  </span><span> 4</span>             '|'. <span>//</span><span> 允许IP和DOMAIN（域名）  </span><span> 5</span>             '([0-9a-z_!~*\'()-]+\.)*'. <span>//</span><span> 域名- www.  </span><span> 6</span>             '([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]\.'. <span>//</span><span> 二级域名  </span><span> 7</span>             '[a-z]{2,6})'.  <span>//</span><span> first level domain- .com or .museum  </span><span> 8</span>             '(:[0-9]{1,4})?'.  <span>//</span><span> 端口- :80  </span><span> 9</span>             '((\/\?)|'.  <span>//</span><span> a slash isn't required if there is no file name  </span><span>10</span>             '(\/[0-9a-zA-Z_!~\'\(\)\[\]\.;\?:@&=\+\$,%#-\/^\*\|]*)?)$/',  
<span>11</span><span>$s</span>) == 1<span>;  
</span><span>12</span>     }  

使用方式很简单，如验证手机号是否有效：

<span>$val</span>='15093691582'<span>;
isPhone(</span><span>$val</span>);

以上就介绍了PHP常用验证正则表达式，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。