怎么判断一个字符串是否存在txt里面
如何判断一个字符串是否存在txt里面
js.txt 内容是
13600000000
13788888888
13666666666
18999999999
我想判断
$mobile = "13788888888";
是否存在 txt里面
------解决方案--------------------
$s=file_get_contents('js.txt');
if(strpos($s,$mobile) !==false) echo '存在';
else echo '不存在';
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