관련링크 하나만 나오게 하려면...

<section>
        <?php $wl_cnt = count((array)$wr_link); ?>
       <?php for ($i=1; $i<=$wl_cnt; $i++) { ?> 

        <div class="row">
            <div class="col col-12">
                <label class="label">관련링크<?php echo $i; ?></label>
                <label class="input">
                    <i class="icon-append fas fa-link"></i>
                    <input type="text" name="wr_link<?php echo $i; ?>" value="<?php if ($w == 'u') echo $wr_link[$i]['link_val']; ?>" id="wr_link<?php echo $i; ?>" class="form-control" size="50">
                    <b class="tooltip tooltip-top-right">링크주소를 입력 해 주세요.</b>
                </label>
            </div>
        </div>
        <?php } ?>
    </section>