How can environment variables impact the functionality of PHP functions like Oci_Logon when establishing a database connection to Oracle?

Environment variables can impact the functionality of PHP functions like Oci_Logon when establishing a database connection to Oracle by affecting the Oracle client configuration. To solve this issue, ensure that the environment variables such as ORACLE_HOME and LD_LIBRARY_PATH are correctly set to point to the Oracle client installation directory. 

putenv('ORACLE_HOME=/path/to/oracle/client');
putenv('LD_LIBRARY_PATH=/path/to/oracle/client/lib');

Keywords

environment variables PHP functions Oci_Logon database connection Oracle

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