wordpress - PHP Undefined index - only in development environment -

wordpress - PHP Undefined index - only in development environment -

i'm not php dev - sorry noob question - i'm confused behaviour of php code given. works fine in production , uat environments, wrong handling of collections in development environment.

in wordpress project code gives error:

$contact_display_2 = $post_meta['contact_display_2'][0];

the error is: notice: undefined index: contact_number_2 in /www/wp-content/themes/custom/standard-content.php on line 85

i ok understanding there no such variable in $post_meta array , isset() function help solve particular error. question is: needs changed in environment configuration application work in development environment in same way in production? thanks

the usual work around when find code written badly amend php.ini file , turn off parameter

display_errors=off

this stop errors beingness shown on browser, may still logged file, see error_log = "some file in folder"

a improve solution, if running wp project in apache virtual host turn parameter off within virtual hosts definition so

php_flag display_errors off

this way improve turns parameter off 1 badly written site , not every site might developing/maintaining. stops writing code badly the developer wrote site stuck with.

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