Test php file does not output to stdout from CLI on server (works locally) -

the question not "how fix error" "how output shown on server, on local install?"

i run php file this

php test.php

locally error , warning outputs. on server operated devops, no output of same file. guess php.ini value set different? knows how undo that?

in both cases file execution fails. file

<?php ini_set('display_startup_errors',1); ini_set('display_errors',1); error_reporting(-1); require(__dir__ ."/../../../bootstrap.php"); ?> teststring  <?php die("bye"); ?> 

now running on server no output. nothing.

running on local computer get:

notice: undefined index: http_host in /var/www/html/myapp/wp-includes/ms-settings.php on line 38  call stack:     0.0009     392912   1. {main}() /var/www/html/myapp/wp-content/themes/fundingpress-child/test.php:0     0.0010     395888   2. require('/var/www/html/myapp/wp-content/themes/fundingpress-child/bootstrap.php') /var/www/html/myapp/wp-content/themes/fundingpress-child/test.php:6     0.0065     687056   3. require_once('/var/www/html/myapp/wp-load.php') /var/www/html/myapp/wp-content/themes/fundingpress-child/bootstrap.php:7     0.0066     699048   4. require_once('/var/www/html/myapp/wp-config.php') /var/www/html/myapp/wp-load.php:37     0.0074     800592   5. require_once('/var/www/html/myapp/wp-settings.php') /var/www/html/myapp/wp-config.php:89     0.0329    3665088   6. require('/var/www/html/myapp/wp-includes/ms-settings.php') /var/www/html/myapp/wp-settings.php:103   warning: cannot modify header information - headers sent (output started @ /var/www/html/myapp/wp-includes/ms-settings.php:38) in /var/www/html/myapp/wp-includes/ms-settings.php on line 187  call stack:     0.0009     392912   1. {main}() /var/www/html/myapp/wp-content/themes/fundingpress-child/test.php:0     0.0010     395888   2. require('/var/www/html/myapp/wp-content/themes/fundingpress-child/bootstrap.php') /var/www/html/myapp/wp-content/themes/fundingpress-child/test.php:6     0.0065     687056   3. require_once('/var/www/html/myapp/wp-load.php') /var/www/html/myapp/wp-content/themes/fundingpress-child/bootstrap.php:7     0.0066     699048   4. require_once('/var/www/html/myapp/wp-config.php') /var/www/html/myapp/wp-load.php:37     0.0074     800592   5. require_once('/var/www/html/myapp/wp-settings.php') /var/www/html/myapp/wp-config.php:89     0.0329    3665088   6. require('/var/www/html/myapp/wp-includes/ms-settings.php') /var/www/html/myapp/wp-settings.php:103     0.0346    3804784   7. header() /var/www/html/myapp/wp-includes/ms-settings.php:187