PHP 7 migration issues

[yuriyua]

1. Variable Interpolation:

#### /var/www/html/administrator/components/com_fabrik/models/fields/collation.php
 * Line 47: `$defaultToTableValue = (bool) $this->element->attributes()->$defaultToTableValue[0];`

Error log:

Notice: Array to string conversion in /var/www/html/administrator/components/com_fabrik/models/fields/collation.php on line 47
Notice: Undefined property: stdClass::$Array in /var/www/html/administrator/components/com_fabrik/models/fields/collation.php on line 47

2. Deprecated Functions: mysql_fetch_array, mysql_data_seek

#### /var/www/html/plugins/fabrik_visualization/fusion_gantt_chart/libs/FCclass/FusionCharts_Gen.php
 * Line 331: ` while($row = mysql_fetch_array($query_result)) {`
 * Line 504: ` while($row = mysql_fetch_array($query_result)) {`
 * Line 522: ` mysql_data_seek($query_result,0);`
 * Line 523: ` while($row = mysql_fetch_array($query_result)) {`
 * Line 543: ` while($row = mysql_fetch_array($query_result)) {`
 * Line 606: ` while($row = mysql_fetch_array($query_result)) {`

#### /var/www/html/plugins/fabrik_visualization/fusionchart/libs/FCclass/FusionCharts_Gen.php
 * Line 331: ` while($row = mysql_fetch_array($query_result)) {`
 * Line 504: ` while($row = mysql_fetch_array($query_result)) {`
 * Line 522: ` mysql_data_seek($query_result,0);`
 * Line 523: ` while($row = mysql_fetch_array($query_result)) {`
 * Line 543: ` while($row = mysql_fetch_array($query_result)) {`
 * Line 606: ` while($row = mysql_fetch_array($query_result)) {`

Are these functions used anywhere?

[Sophist-UK]

I am using Fabrik on Php 7 without getting these.

What version of Fabrik are you on?

[yuriyua]

I am on Fabrik 3.8. I have no issues but we have deprecated code on the master
https://github.com/Fabrik/fabrik/search?utf8=%E2%9C%93&q=mysql_fetch_array&type=
...

[Sophist-UK]

Those are in deprecated plugins.

[Sophist-UK]

@yuriyua Please submit a PR to fix the Variable Interpolation issue in the collation form field type (used in List.xml).

[yuriyua]

I think this is the simplest fix #1955