title: PHP - Consider PHP string as inbuilt php function
body: <p>I am using php to connect to oracle database, php function to connect to oracle database is</p>
  <pre><code>oci_connect(&quot;user&quot;,&quot;password&quot;,&quot;database&quot;);
  </code></pre>
  <p>to make connection string more secure, i store connection string in php string variable and  i have encrypted whole php string using openssl_encrypt method aes-128-cbc.</p>
  <p>at the run time i am decrypting my encrypted string, encryption and decryption part is working ok, when i am decrypting string at run time i am getting proper decrypted value</p>
  <pre><code>$dec_conn_string = openssl_decrypt($encrypted_conn_string,&quot;aes-128-cbc&quot;, $keys, $options=0, $iv);
  </code></pre>
  <p>so it is like</p>
  <pre><code>$dec_conn_string = oci_connect(&quot;user&quot;,&quot;password&quot;,&quot;database&quot;);
  </code></pre>
  <p>but $dec_conn_string is not having expected value e.g FALSE or connection identifier and connection to database is not happening, when i echo php variable $dec_conn_string it displays oci_connect(&quot;user&quot;,&quot;password&quot;,&quot;database&quot;).</p>