PHP常用验证正则表达式，php正则表达式
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>$val</span><span>))
</span><span>4</span> <span>return</span> <span>true</span><span>;
</span><span>5</span> <span>return</span> <span>false</span><span>;
</span><span>6</span> }登录后复制
2.验证是否为手机号
<span>1</span> <span>function</span> isPhone(<span>$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> }登录后复制
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>$val</span><span>))
</span><span>4</span> <span>return</span> <span>true</span><span>;
</span><span>5</span> <span>return</span> <span>false</span><span>;
</span><span>6</span>
<span>7</span>
<span>8</span> }登录后复制
4.验证是否是合法的Url地址
<span> 1</span> <span>function</span> isUrl(<span>$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> } 登录后复制
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>);
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