How to print a line to STDERR and STDOUT in PHP?
In PHP, how to print a string as a line to STDOUT? That is, the string and the newline character, nicely?
And similarly, how to print the line to STDERR?
In PHP, you may print a line to STDOUT using echo by appending the PHP_EOL to the string:
echo $your_msg . PHP_EOL;
For example,
$ php -a
Interactive shell
php > echo "hello world!" . PHP_EOL;
hello world!
php >
To print to STDERR, you may use fwrite like
fwrite(STDERR, "hello, world!" . PHP_EOL);
One example is as follows.
$ cat php-stderr.php
<?php
fwrite(STDERR, "hello, world!" . PHP_EOL);
$ php php-stderr.php 2>/tmp/stderr
$ cat /tmp/stderr
hello, world!