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ereg()
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Óï·¨: int ereg(string pattern, string string, array [regs]);
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<?php
if (ereg("c","abcdef")){     //˵Ã÷£ºÅжÏabcdefÖÐÊÇ·ñº¬ÓÐ×Öĸc
     echo "ͨ¹ý";
}else{
     echo "´íÎó";
}
?>
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<?php
if (ereg("^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,3}$",$email)) {
   echo "ÄúµÄ E-Mail ͨ¹ý³õ²½¼ì²é";
}
?>
eregi()
Ó÷¨Óë ereg() Ïàͬ¡£²»Í¬Ö®´¦ÔÚÓÚ
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ÔÚabcdefÖвéÕÒÊÇ·ñº¬Óдóд×ÖĸC
<?php
if (ereg("C","abcdef")){
     echo "ͨ¹ý";
}else{
     echo "´íÎó";
}
?>
//·µ»Ø½á¹ûÊÇ£º´íÎó
<?php
if (eregi("C","abcdef")){
     echo "ͨ¹ý";
}else{
     echo "´íÎó";
}
?>
//·µ»Ø½á¹ûÊÇ£ºÍ¨¹ý
ereg() ÓÐÇø·Ö´óСд£¬eregi()±¾º¯ÊýÓë´óСдÎ޹ء£
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<?php
$str="a";
if(eregi("[0-9]+",$str)){
   echo"ÕâÊÇÒ»¸öÊý×Ö";
}
else if(eregi("[a-z]+",$str)){
   echo"ÕâÊÇÒ»¸ö×Öĸ";
}
else if(eregi("[Ò»-龥]+",$str)){
   echo"ÕâÊÇÒ»¸öºº×Ö";
}
?>


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while($data=fgetcsv($handle,1024))
{
list($user,$pwd,$partment,$title)=$data;
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