PHP常用验证正则表达式
数字、手机号、QQ号、Url地址合法性校验
1.验证是否为整数
<span style="color: #008080;">1</span> <span style="color: #0000ff;">function</span> isNumber(<span style="color: #800080;">$val</span><span style="color: #000000;">)</span><span style="color: #008080;">2</span> <span style="color: #000000;"> {</span><span style="color: #008080;">3</span> <span style="color: #0000ff;">if</span>(<span style="color: #008080;">ereg</span>("^[0-9]+$", <span style="color: #800080;">$val</span><span style="color: #000000;">))</span><span style="color: #008080;">4</span> <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">true</span><span style="color: #000000;">;</span><span style="color: #008080;">5</span> <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">false</span><span style="color: #000000;">;</span><span style="color: #008080;">6</span> }2.验证是否为手机号
<span style="color: #008080;">1</span> <span style="color: #0000ff;">function</span> isPhone(<span style="color: #800080;">$val</span><span style="color: #000000;">){</span><span style="color: #008080;">2</span> <span style="color: #008080;">3</span> <span style="color: #0000ff;">if</span> (<span style="color: #008080;">ereg</span>("^1[1-9][0-9]{9}$",<span style="color: #800080;">$val</span><span style="color: #000000;">))</span><span style="color: #008080;">4</span> <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">true</span><span style="color: #000000;">;</span><span style="color: #008080;">5</span> <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">false</span><span style="color: #000000;">;</span><span style="color: #008080;">6</span> <span style="color: #008080;">7</span> <span style="color: #008080;">8</span> }3.验证是否为有效的QQ号
<span style="color: #008080;">1</span> <span style="color: #0000ff;">function</span> isQQ(<span style="color: #800080;">$val</span><span style="color: #000000;">){</span><span style="color: #008080;">2</span> <span style="color: #008080;">3</span> <span style="color: #0000ff;">if</span> (<span style="color: #008080;">ereg</span>("^[1-9][0-9]{4,12}$",<span style="color: #800080;">$val</span><span style="color: #000000;">))</span><span style="color: #008080;">4</span> <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">true</span><span style="color: #000000;">;</span><span style="color: #008080;">5</span> <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">false</span><span style="color: #000000;">;</span><span style="color: #008080;">6</span> <span style="color: #008080;">7</span> <span style="color: #008080;">8</span> }4.验证是否是合法的Url地址
<span style="color: #008080;"> 1</span> <span style="color: #0000ff;">function</span> isUrl(<span style="color: #800080;">$s</span><span style="color: #000000;">) { </span><span style="color: #008080;"> 2</span> <span style="color: #0000ff;">return</span> <span style="color: #008080;">preg_match</span>('/^http[s]?:\/\/'. <span style="color: #008080;"> 3</span> '(([0-9]{1,3}\.){3}[0-9]{1,3}'. <span style="color: #008000;">//</span><span style="color: #008000;"> IP形式的URL- 199.194.52.184 </span><span style="color: #008080;"> 4</span> '|'. <span style="color: #008000;">//</span><span style="color: #008000;"> 允许IP和DOMAIN（域名） </span><span style="color: #008080;"> 5</span> '([0-9a-z_!~*\'()-]+\.)*'. <span style="color: #008000;">//</span><span style="color: #008000;"> 域名- www. </span><span style="color: #008080;"> 6</span> '([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]\.'. <span style="color: #008000;">//</span><span style="color: #008000;"> 二级域名 </span><span style="color: #008080;"> 7</span> '[a-z]{2,6})'. <span style="color: #008000;">//</span><span style="color: #008000;"> first level domain- .com or .museum </span><span style="color: #008080;"> 8</span> '(:[0-9]{1,4})?'. <span style="color: #008000;">//</span><span style="color: #008000;"> 端口- :80 </span><span style="color: #008080;"> 9</span> '((\/\?)|'. <span style="color: #008000;">//</span><span style="color: #008000;"> a slash isn't required if there is no file name </span><span style="color: #008080;">10</span> '(\/[0-9a-zA-Z_!~\'\(\)\[\]\.;\?:@&=\+\$,%#-\/^\*\|]*)?)$/', <span style="color: #008080;">11</span> <span style="color: #800080;">$s</span>) == 1<span style="color: #000000;">; </span><span style="color: #008080;">12</span> } 使用方式很简单，如验证手机号是否有效：
<span style="color: #800080;">$val</span>='15093691582'<span style="color: #000000;">;isPhone(</span><span style="color: #800080;">$val</span>);
