Добавление повторного лида

Пример разместит на странице сайта форму CRM. По заполнении формы в Битрикс24 будет создаваться новый лид как повторный с привязкой к нему контакта или компании из старых лидов.

1. Создаём форму на нужной странице:

   <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
   <script>
   $(document).ready(function() {
   	$('#form_to_crm').on( 'submit', function(el) {//event submit form
   		el.preventDefault();//the default action of the event will not be triggered
   		var formData = $(this).serialize();
   		$.ajax({
   			'method': 'POST',
   			'dataType': 'json',
   			'url': 'form.php',
   			'data':  formData,
   			success: function(data){//success callback
   				alert(data.message);
   			}
   		});
   	});
   });
   </script>
   	
   <form id="form_to_crm">
   	<input type="text" name="NAME" placeholder="Name" required>
   	<input type="text" name="LAST_NAME" placeholder="Last name">
   	<input type="text" name="PHONE" placeholder="Phone">
   	<input type="text" name="EMAIL" placeholder="E-mail">
   	<input type="submit" value="Submit">
   </form>
   

2. Создаём файл form.php, для сохранения заполненных форм:
   

   
   <?
   $sName = htmlspecialchars($_POST["NAME"]);	
   $sLastName = htmlspecialchars($_POST["LAST_NAME"]);
   $sPhone = htmlspecialchars($_POST["PHONE"]);
   $sEmail = htmlspecialchars($_POST["EMAIL"]);
   		
   $arFields = [
   	'TITLE'         => 'From the site: ' . implode(' ', [$sName, $sLastName]),
   	'NAME'          => (!empty($sName)) ? $sName : 'Empty name',//if simple mode crm NAME or LAST_NAME required for converting to contact
   	'LAST_NAME'   => $sLastName,
   	'PHONE'         => (!empty($sPhone)) ? array(array('VALUE' => $sPhone, 'VALUE_TYPE' => 'HOME')) : array(),
   	'EMAIL'         => (!empty($sEmail)) ? array(array('VALUE' => $sEmail, 'VALUE_TYPE' => 'HOME')) : array()
   ];
   	
   $arLeadDuplicate = [];
   if(!empty($sPhone)){//search duplicate by phone
   	$arResultDuplicate = CRest::call('crm.duplicate.findbycomm',[
   		"entity_type" => "LEAD",
   		"type" => "PHONE",
   		"values" => array($sPhone)
   	]);
   	if(!empty($arResultDuplicate['result']['LEAD'])){
   		$arLeadDuplicate = array_merge ($arLeadDuplicate,$arResultDuplicate['result']['LEAD']);
   	}
   }
   	
   if(!empty($sEmail)) {//search duplicate by email
   	$arResultDuplicate = CRest::call('crm.duplicate.findbycomm', [
   		"entity_type" => "LEAD",
   		"type" => "EMAIL",
   		"values" => [$sEmail]
   	]);
   	if(!empty($arResultDuplicate[ 'result' ][ 'LEAD' ])) {
   		$arLeadDuplicate = array_merge($arLeadDuplicate, $arResultDuplicate[ 'result' ][ 'LEAD' ]);
   	}
   }
   	
   if(!empty($arLeadDuplicate)){//get converted duplicate lead and filling $arFields COMPANY_ID or CONTACT_ID
   	$arDuplicateLead = CRest::call('crm.lead.list',[
   		"filter" => [
   			'=ID' => $arLeadDuplicate,
   			'STATUS_ID' => 'CONVERTED',
   		],
   		'select' => [
   			'ID', 'COMPANY_ID', 'CONTACT_ID'
   		]
   	]);
   		
   	if(!empty($arDuplicateLead['result'])){
   		$sCompany = reset(array_diff(array_column($arDuplicateLead['result'],'COMPANY_ID','ID'),['']));
   		$sContact = reset(array_diff(array_column($arDuplicateLead['result'],'CONTACT_ID','ID'),['']));
   		if($sCompany > 0)
   			$arFields['COMPANY_ID'] = $sCompany;
   		if($sContact > 0)
   			$arFields['CONTACT_ID'] = $sContact;
   	}
   }
   	
   $result = CRest::call('crm.lead.add',
   	[
   		'fields'    =>  $arFields
   	]
   );
   if(!empty($result['result'])){
   	echo json_encode(['message' => 'Lead add']);
   }elseif(!empty($result['error_description'])){
   	echo json_encode(['message' => 'Lead not added: '.$result['error_description']]);
   }else{
   	echo json_encode(['message' => 'Lead not added']);
   }
   ?>