PHP获取动态IP并记录到文件（第三版）

改了几个错误，改了一下记录文件格式，缩减体积，加了个什么点击才显示所有数据详情的功能。

之前的帖子：

传入url形式： https://www.***.com/test.php?ddnsurl=****.gicp.net&ddnsip=111.111.111.111&key=password

新的代码如下：

<?php
$datafile="ddnsip.data";

if(!is_writeable($datafile))
	echo("<font color=red>File is not writeable!</font><br>\n");###############

//点击Contents of records链接后，在contents段落中显示内容。
if (isset($_GET['load'])) {
    $lines = @file($datafile);
    $content = '';
        for($n = count($lines)-1; $n >= 0; $n--) {
        $line = trim($fp[$n] ?? $lines[$n]);
        // 不转义 &nbsp;，保留原样
        $content .= $line . "<br>";
	}
    echo $content;
    exit;
}

//这个密码自己设置，也就是做个样子，其实并没有什么卵用。
if(is_array($_GET)&&count($_GET)>0&&$_GET["key"]=="password")
{
if(isset($_GET["ddnsip"])&&isset($_GET["ddnsurl"]))
{
	$ddnsip = $_GET['ddnsip'];
	$ddnsurl = $_GET['ddnsurl'];
	$ddnstext = $ddnsurl . " - " . $ddnsip . " - [".date('Y-m-d H:i:s')."]\n";//记录进data文件的格式。
	$maxline = 500;
	$fp = file($datafile);
	$file = fopen($datafile,"a");
	$try = 0;
LOCKFILE:
	if(flock($file , LOCK_EX))
	{
	        for ($x=(count($fp)-1);$x>=0;$x--)
	        {
	                if(substr($fp[$x],0,strpos($fp[$x]," -")) == $ddnsurl)
	                        {
	                                if($ddnsip != substr($fp[$x],strpos($fp[$x],"- ")+2,strrpos($fp[$x]," -")-strpos($fp[$x],"- ")-2))
	                                        {
	                                                fwrite($file,$ddnstext);
	                                                echo("ddnsip updated.<br>");###############
	                                        }
	                                break;
	                        }
	        }
	        if($x==-1)
	        {
	                fwrite($file,$ddnstext);
	                echo("ddnsip added.<br>");###############
		}
		flock($file , LOCK_UN);
		fclose($file);
	}
	else
	{
		sleep(5);
		$try = $try + 1;
		if($try <= 5)
		{
			goto LOCKFILE;
		}
	}

	############shift if lines max###########
	$fp = file($datafile);
	if(count($fp)>$maxline)
	{
		while(count($fp)>$maxline){array_shift($fp);}
		$file = fopen($datafile,"w");
		        if(flock($file , LOCK_EX))
		        {
		                for($n=0;$n<count($fp);$n++)
		                        {
		                                fwrite($file,$fp[$n]);
		                        }
		                flock($file , LOCK_UN);
		        }
		fclose($file);
		echo("Records shifted.<br>\n");###############
	}


}
else
{
	echo("Parameters is not set!<br>\n");
	$fp = file($datafile);
	echo("<b>Records:</b>".count($fp)."<br>\n");
	echo("<b>Summary:</b><br>\n——————————————————————————————<br>\n");

	for($n=count($fp)-1;$n>=1;$n--)
	{
		$first_name=substr($fp[$n],0,strpos($fp[$n]," -"));
		for($m=$n-1;$m>=0;$m--)
		{
			if($first_name == substr($fp[$m],0,strpos($fp[$m]," -")))
			{
				array_splice($fp,$m,1);
				$n--;
			}
		}
	}
	rsort($fp);
        for($n=count($fp)-1;$n>=0;$n--)
	{
		$ipaddr = substr($fp[$n],strpos($fp[$n],"- ")+2,strrpos($fp[$n]," -")-strpos($fp[$n],"- ")-2);
		if(strpos($ipaddr,':')!==false)
		{
			echo(substr($fp[$n],0,strpos($fp[$n]," -")+3) . "<a href=\"http://[" . $ipaddr . "]:1987\" about=_blank>" . $ipaddr . "</a>" . substr($fp[$n],strrpos($fp[$n]," -"),strlen($fp[$n])-strrpos($fp[$n]," -"))) . "<br>";
		}
		else
		{
			echo(substr($fp[$n],0,strpos($fp[$n]," -")+3) . "<a href=\"http://" . $ipaddr . ":1987\" about=_blank>" . $ipaddr . "</a>" . substr($fp[$n],strrpos($fp[$n]," -"),strlen($fp[$n])-strrpos($fp[$n]," -"))) . "<br>";
		}
	}

	echo("<br>\n");
        echo "<b><a href=\"javascript:;\" onclick=\"showMore()\">Contents of records:</a></b><br>\n——————————————————————————————<br>\n";
	echo "<p id=\"contents\" style=\"white-space:pre-wrap;\"></p>";

}
}
else 
{
	echo("No parameters!<br>\n");
}

?>

<script>
function showMore() {
    fetch('?load=1')
    .then(res => res.text())
    .then(data => {
        document.getElementById('contents').innerHTML = data;
    });
}
</script>

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

<?php

$datafile="ddnsip.data";

if(!is_writeable($datafile))

echo("File is not writeable! \n");###############

//点击Contents of records链接后，在contents段落中显示内容。

if (isset($_GET['load'])) {

$lines = @file($datafile);

$content = '';

for($n = count($lines)-1; $n >= 0; $n--) {

$line = trim($fp[$n] ?? $lines[$n]);

// 不转义  ，保留原样

$content .= $line . " ";

}

echo $content;

exit;

}

//这个密码自己设置，也就是做个样子，其实并没有什么卵用。

if(is_array($_GET)&&count($_GET)>0&&$_GET["key"]=="password")

{

if(isset($_GET["ddnsip"])&&isset($_GET["ddnsurl"]))

{

$ddnsip = $_GET['ddnsip'];

$ddnsurl = $_GET['ddnsurl'];

$ddnstext = $ddnsurl . " - " . $ddnsip . " - [".date('Y-m-d H:i:s')."]\n";//记录进data文件的格式。

$maxline = 500;

$fp = file($datafile);

$file = fopen($datafile,"a");

$try = 0;

LOCKFILE:

if(flock($file , LOCK_EX))

{

for ($x=(count($fp)-1);$x>=0;$x--)

{

if(substr($fp[$x],0,strpos($fp[$x]," -")) == $ddnsurl)

{

if($ddnsip != substr($fp[$x],strpos($fp[$x],"- ")+2,strrpos($fp[$x]," -")-strpos($fp[$x],"- ")-2))

{

fwrite($file,$ddnstext);

echo("ddnsip updated. ");###############

}

break;

}

if($x==-1)

{

fwrite($file,$ddnstext);

echo("ddnsip added. ");###############

}

flock($file , LOCK_UN);

fclose($file);

}

else

{

sleep(5);

$try = $try + 1;

if($try <= 5)

{

goto LOCKFILE;

}

############shift if lines max###########

$fp = file($datafile);

if(count($fp)>$maxline)

{

while(count($fp)>$maxline){array_shift($fp);}

$file = fopen($datafile,"w");

if(flock($file , LOCK_EX))

{

for($n=0;$n<count($fp);$n++)

{

fwrite($file,$fp[$n]);

}

flock($file , LOCK_UN);

}

fclose($file);

echo("Records shifted. \n");###############

}

else

{

echo("Parameters is not set! \n");

$fp = file($datafile);

echo("Records:".count($fp)." \n");

echo("Summary: \n—————————————————————————————— \n");

for($n=count($fp)-1;$n>=1;$n--)

{

$first_name=substr($fp[$n],0,strpos($fp[$n]," -"));

for($m=$n-1;$m>=0;$m--)

{

if($first_name == substr($fp[$m],0,strpos($fp[$m]," -")))

{

array_splice($fp,$m,1);

$n--;

}

rsort($fp);

for($n=count($fp)-1;$n>=0;$n--)

{

$ipaddr = substr($fp[$n],strpos($fp[$n],"- ")+2,strrpos($fp[$n]," -")-strpos($fp[$n],"- ")-2);

if(strpos($ipaddr,':')!==false)

{

echo(substr($fp[$n],0,strpos($fp[$n]," -")+3) . "<a href=\"http://[" . $ipaddr . "]:1987\" about=_blank>" . $ipaddr . "</a>" . substr($fp[$n],strrpos($fp[$n]," -"),strlen($fp[$n])-strrpos($fp[$n]," -"))) . " ";

}

else

{

echo(substr($fp[$n],0,strpos($fp[$n]," -")+3) . "<a href=\"http://" . $ipaddr . ":1987\" about=_blank>" . $ipaddr . "</a>" . substr($fp[$n],strrpos($fp[$n]," -"),strlen($fp[$n])-strrpos($fp[$n]," -"))) . " ";

}

echo(" \n");

echo "<a href=\"javascript:;\" onclick=\"showMore()\">Contents of records:</a> \n—————————————————————————————— \n";

echo "";

}

else

{

echo("No parameters! \n");

}

function showMore() {

fetch('?load=1')

.then(res => res.text())

.then(data => {

document.getElementById('contents').innerHTML = data;

});

}

</script>