query: Call to a member function num_rows() on a non-object
positive_passages.docid: 1304
positive_passages.text: Call to a member function on a non-object
negative_passages.docid: 43365
negative_passages.text: PHP & MySQL: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given
negative_passages.docid: 37685
negative_passages.text: queries with db_select don't respect integers
negative_passages.docid: 121856
negative_passages.text: The result of a query cannot be enumerated more than once
negative_passages.docid: 94459
negative_passages.text: PHP/mysql get number of affected rows of UPDATE statement
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negative_passages.text: PHP Warning: Invalid argument supplied for foreach()
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negative_passages.text: How to SELECT random rows from table with an exact number of row?
negative_passages.docid: 103446
negative_passages.text: PDO: Call to a member function fetch() on a non-object?
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negative_passages.text: How can I get the total number of rows in a CSV file with PHP?
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negative_passages.docid: 4994
negative_passages.text: Retrieving n rows per group
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negative_passages.text: CodeIgniter Active Record - Get number of returned rows
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negative_passages.text: Warning: mysql_fetch_object(): supplied argument is not a valid MySQL result resource
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negative_passages.text: Mysql_fetch_assoc(): supplied argument is not a valid MySQL result …