ACF field generation code.

email.php

<?php
array (
	'key' => 'field_56bde9a0ea676',
	'label' => 'Email',
	'name' => 'email',
	'type' => 'email',
	'instructions' => '',
	'required' => 0,
	'conditional_logic' => 0,
	'wrapper' => array (
		'width' => '',
		'class' => '',
		'id' => '',
	),
	'default_value' => '',
	'placeholder' => '',
	'prepend' => '',
	'append' => '',
)

number.php

<?php
array (
	'key' => 'field_56bde993ea675',
	'label' => 'Numeric',
	'name' => 'numeric',
	'type' => 'number',
	'instructions' => '',
	'required' => 0,
	'conditional_logic' => 0,
	'wrapper' => array (
		'width' => '',
		'class' => '',
		'id' => '',
	),
	'default_value' => '',
	'placeholder' => '',
	'prepend' => '',
	'append' => '',
	'min' => '',
	'max' => '',
	'step' => '',
	'readonly' => 0,
	'disabled' => 0,
)

text.php

<?php
array (
	'key' => 'field_56bde973ea673',
	'label' => 'Basic Text Field',
	'name' => 'basic_text_field',
	'type' => 'text',
	'instructions' => '',
	'required' => 0,
	'conditional_logic' => 0,
	'wrapper' => array (
		'width' => '',
		'class' => '',
		'id' => '',
	),
	'default_value' => '',
	'placeholder' => '',
	'prepend' => '',
	'append' => '',
	'maxlength' => '',
	'readonly' => 0,
	'disabled' => 0,
)

textarea.php

<?php
array (
	'key' => 'field_56bde97fea674',
	'label' => 'Basic Text Area',
	'name' => 'basic_text_area',
	'type' => 'textarea',
	'instructions' => '',
	'required' => 0,
	'conditional_logic' => 0,
	'wrapper' => array (
		'width' => '',
		'class' => '',
		'id' => '',
	),
	'default_value' => '',
	'placeholder' => '',
	'maxlength' => '',
	'rows' => '',
	'new_lines' => 'wpautop',
	'readonly' => 0,
	'disabled' => 0,
)

url.php

<?php
array (
	'key' => 'field_56bde9adea677',
	'label' => 'URL',
	'name' => 'url',
	'type' => 'url',
	'instructions' => '',
	'required' => 0,
	'conditional_logic' => 0,
	'wrapper' => array (
		'width' => '',
		'class' => '',
		'id' => '',
	),
	'default_value' => '',
	'placeholder' => '',
)