Home Backend Development PHP Tutorial 正则表达式例子:在一个字符串中查找另一个字符串_PHP

正则表达式例子:在一个字符串中查找另一个字符串_PHP

Jun 01, 2016 pm 12:33 PM
echo query where example string Find

正则表达式


正则表达式

返回列表


中查找

>第二个字符串可以在第一个字符串的任何位置

>第一个字符串以第二个字符串开始

>第一个字符串以第二个字符串结束

>区分大小写




if(isset($string) and isset($query) and $string"" and $query""){
if(isset($case)){
$func = "ereg";
}
else{
$func = "eregi";
}
switch($where){
case "^":
$query = "^" . $query;
break;
case "$":
$query .= "$";
break;
}
eval("\$found = $func(\"$query\",\"$string\");");
if($found){
echo "找到!";
}
else{
echo "未找到!";
}
}
?>

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