Why does the script not work via cron (sh->php)?

Question

linux

This is how the script works fine
crontab -e

*/1 * * * * /usr/bin/php  /var/www/site/get_data.php >/dev/null 2>&1

(The script writes data to the database.)
But it was necessary to run the script more than once a minute.
Advised to do through sh
crontab -e

*/3 * * * * /var/www/site/get_data.sh >/dev/null 2>&1

get_data.sh

#!/bin/bash
for i in {1..10}
do
/usr/bin/php  /var/www/site/get_data.php >/dev/null 2>&1
sleep 10
done

And the script doesn't work. The data does not appear in the database.
Why is the script not working?

Answer 1

Judging by the comment: Why doesn't the script work via cron (sh->php)?
The problem is that you saved the file on Windows.
It's good to read about crlf and lf.
Problem solution:
The script is small, you can rewrite it directly on Linux with your hands (for example, in nano)
Or try using the solution from here:
stackoverflow

awk '{ sub("\r$", ""); print }' get_data.sh > get_data2.sh
mv get_data2.sh get_data.sh

Answer 2

Instead of writing the output to null, write it to the file. Also, cron can throw something into the system logs.