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<?php $records = array( array( 'id' => 2135, 'first_name' => 'John', 'last_name' => 'Doe', ), array( 'id' => 3245, 'first_name' => 'Sally', 'last_name' => 'Smith', ), array( 'id' => 5342, 'first_name' => 'Jane', 'last_name' => 'Jones', ), array( 'id' => 5623, 'first_name' => 'Peter', 'last_name' => 'Doe', ) ); $keys = array_keys($records[0]); var_export($keys); echo "\n"; echo "Number of columns: " , count($keys);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 'id', 1 => 'first_name', 2 => 'last_name', ) Number of columns: 3

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