How to add content to txt file in php

This article mainly introduces the method of appending content to txt files in PHP, involving related operating techniques of adding content to PHP overlay to Txt files, appending content and reading Txt files line by line. Friends in need can refer to the following

The details are as follows:

Overwrite the content of the txt file:

$filename="aa/a.txt";
$handle=fopen($filename,"w");
$str=fwrite($handle,"test");
fclose($handle);

Effect:

testtesttesttesttesttesttest

Append content to txt:

$filename="aa/a.txt";
$handle=fopen($filename,"a+");
$str=fwrite($handle,"test\n");
fclose($handle);

Effect:

test
test
test
test
test
test
test

##Read txt line by line:

$lines=file("db.txt");
foreach ($lines as $value) {
$line=explode(",",$value);
echo "no1:$line[0]--no2:$line[1]---time:$line[2]-<br>";
}

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