php正则表达式实例

怼烎@ 2022-06-09 05:55 248阅读 0赞

# php正则表达式实例 #

1。判断字符串是否为空，非空时检测输入字符串是否为汉字、平假名、片假名或全角数字

![None.gif][] if  ( empty ( $paymentway \-> bank\_name)) \{  
![None.gif][]     $\_REQUEST \[ " ERROR\_MESSAGE " \]  =  BANK\_NAME\_NOT\_INPUT;  
![None.gif][]     $\_REQUEST \[ " PAYMENT\_EDIT\_SEARCH\_RESULT " \]  =   $paymentway ;  
![None.gif][]     $doContinueFlg   =   false ;  
![None.gif][]\} else   if ( ! mb\_ereg( " ^(\[一-龠\]|\[ぁ-ん\]|\[ァ-ヴ\]|\[ａ-ｚＡ-Ｚ０-９\])+$ " , $paymentway \-> bank\_name))\{  
![None.gif][]     $\_REQUEST \[ " ERROR\_MESSAGE " \]  =  BANK\_NAME\_INPUT\_ERROR;  
![None.gif][]     $\_REQUEST \[ " PAYMENT\_EDIT\_SEARCH\_RESULT " \]  =   $paymentway ;  
![None.gif][]     $doContinueFlg   =   false ;  
![None.gif][]\}

2。判断字符串是否为空，非空时检测输入字符串是否为数字

![None.gif][] if ( empty ( $paymentway \-> bank\_account))\{  
![None.gif][]     $\_REQUEST \[ " ERROR\_MESSAGE " \]  =  BANK\_ACCOUNT\_NOT\_INPUT;  
![None.gif][]     $\_REQUEST \[ " PAYMENT\_EDIT\_SEARCH\_RESULT " \]  =   $paymentway ;  
![None.gif][]     $doContinueFlg   =   false ;  
![None.gif][]\} else \{  
![None.gif][]            if ( ! is\_numeric ( $paymentway \-> bank\_account))\{  
![None.gif][]                           $\_REQUEST \[ " ERROR\_MESSAGE " \]  =  BANK\_ACCOUNT\_NOT\_ILLEGAL;  
![None.gif][]                           $\_REQUEST \[ " PAYMENT\_EDIT\_SEARCH\_RESULT " \]  =   $paymentway ;  
![None.gif][]                           $doContinueFlg   =   false ;  
![None.gif][]    \}                  
![None.gif][]\}

3。判断字符串是否为空，非空时检测输入字符串是否合法邮编

![None.gif][] if ( empty ( $paymentway \-> post\_office\_mark))\{  
![None.gif][]     $\_REQUEST \[ " ERROR\_MESSAGE " \]  =  POST\_OFFICE\_MARK\_NOT\_INPUT;  
![None.gif][]     $\_REQUEST \[ " PAYMENT\_EDIT\_SEARCH\_RESULT " \]  =   $paymentway ;  
![None.gif][]     $doContinueFlg   =   false ;              
![None.gif][]\} else \{  
![None.gif][]     if ( ! mb\_ereg( " ^\[0-9\]\{3\}\[-\]?\[0-9\]\{4\}$ " , $paymentway \-> post\_office\_mark))\{  
![None.gif][]         $\_REQUEST \[ " ERROR\_MESSAGE " \]  =  POST\_OFFICE\_MARK\_NOT\_ILLEGAL;  
![None.gif][]         $\_REQUEST \[ " PAYMENT\_EDIT\_SEARCH\_RESULT " \]  =   $paymentway ;  
![None.gif][]         $doContinueFlg   =   false ;  
![None.gif][]    \}  
![None.gif][]\}

[None.gif]: /images/20220609/dc25b30df936410cb16953c7166ac396.png