count html table rows using PHP : I need to display the num of the row (tr) using php, but i don't know how to do because i using quotes ... 
Thanks for yours answers aaaaaaaaaaaaaaaaaaaaa

    	$data['formation'] = '
		<div class="table-responsive">
			<table class="table table-bordered" style="width: auto !important;">
			 <thead style="font-weight: bold;">
			   <tr>
			      <td>N</td>
			      <td>Intitulé</td>
			      <td>Organisme</td>
			      <td>Date</td>
			      <td>Durée (en heures)</td>
			      <td>Eval. à chaud / à froid</td>
			      <td>Dispositif utilisé</td>
			    </tr>
			  </thead>
			  <tbody class="table-striped">
			    <tr>
					<td>
						**HERE NUM OF THE ROW**
					</td>
					<td>
						<input type="text" class="form-control" name="form_intitule" id="form_intitule" readonly>
					</td>
					<td>
						<input type="text" class="form-control" name="form_organisme" id="form_organisme" readonly>
					</td>
					<td>
						<input type="text" class="form-control" name="form_date" id="form_date" readonly>
					</td>
					<td>
						<input type="text" class="form-control" name="form_duree" id="form_duree" readonly>
					</td>
					<td></td>
					<td></td>
			    </tr>
			  </tbody>
			</table>
		</div>';
    }