How do I convert my sed insert text script in PHP? - php

Question

I have a working sed script that inserts text to a document at the line number.
sed -i '35i \ NewPage,' file
wondering if theres a way i can achive the same result using php.
35 i is the row number to be inserted
\ make the insert in a new line
NewPage is the text being inserted
file is the file location
Any suggestions?
Best regards
AT.

Answer 1

You can but can't be oneliner like sed
Sample Input
akshay#db-3325:/tmp$ seq 1 5 > test.txt
akshay#db-3325:/tmp$ cat test.txt
1
2
3
4
5
Output with sed at line number 4
akshay#db-3325:/tmp$ sed '4i \ NewPage,' test.txt
1
2
3
NewPage,
4
5
PHP Script
akshay#db-3325:/tmp$ cat test.php
<?php
$new_contents = " NewPage,";
$file = "test.txt";
$line = 4;
$contents = file($file);
array_splice($contents, $line-1, 0, $new_contents.PHP_EOL);
file_put_contents($file, implode("",$contents));
?>
Execution and Output
akshay#db-3325:/tmp$ php test.php
akshay#db-3325:/tmp$ cat test.txt
1
2
3
NewPage,
4
5
OR else you have to use exec, but careful if you are enabling exec in your server, usually people disable these functions in their php.ini configuration
exec("sed -i '35i \ NewPage,' path/to/file 2>&1", $outputAndErrors, $return_value);
if (!$return_value) {
// Alright command executed successfully
}
Note : In general functions such as “exec” and “system” are always
used to execute the external programs. Even a shell command can also
be executed. If these two functions are enabled then a user can enter
any command as input and execute into your server.