这是我对联系人表单的非常简单的实现：
class WPSE_299521_Form {
/**
* Class constructor
*/
public function __construct() {
$this->define_hooks();
}
public function controller() {
if( isset( $_POST[\'submit\'] ) ) { // Submit button
$full_name = filter_input( INPUT_POST, \'full_name\', FILTER_SANITIZE_STRING );
$email = filter_input( INPUT_POST, \'email\', FILTER_SANITIZE_STRING | FILTER_SANITIZE_EMAIL );
$color = filter_input( INPUT_POST, \'color\', FILTER_SANITIZE_STRING );
$accessories = filter_input( INPUT_POST, \'accessories\', FILTER_SANITIZE_STRING, FILTER_REQUIRE_ARRAY );
$comments = filter_input( INPUT_POST, \'comments\', FILTER_SANITIZE_STRING );
// Send an email and redirect user to "Thank you" page.
}
}
/**
* Display form
*/
public function display_form() {
$full_name = filter_input( INPUT_POST, \'full_name\', FILTER_SANITIZE_STRING );
$email = filter_input( INPUT_POST, \'email\', FILTER_SANITIZE_STRING | FILTER_SANITIZE_EMAIL );
$color = filter_input( INPUT_POST, \'color\', FILTER_SANITIZE_STRING );
$accessories = filter_input( INPUT_POST, \'accessories\', FILTER_SANITIZE_STRING, FILTER_REQUIRE_ARRAY );
$comments = filter_input( INPUT_POST, \'comments\', FILTER_SANITIZE_STRING );
// Default empty array
$accessories = ( $accessories === null ) ? array() : $accessories;
$output = \'\';
$output .= \'<form method="post">\';
$output .= \' <p>\';
$output .= \' \' . $this->display_text( \'full_name\', \'Name\', $full_name );
$output .= \' </p>\';
$output .= \' <p>\';
$output .= \' \' . $this->display_text( \'email\', \'Email\', $email );
$output .= \' </p>\';
$output .= \' <p>\';
$output .= \' \' . $this->display_radios( \'color\', \'Color\', $this->get_available_colors(), $color );
$output .= \' </p>\';
$output .= \' <p>\';
$output .= \' \' . $this->display_checkboxes( \'accessories\', \'Accessories\', $this->get_available_accessories(), $accessories );
$output .= \' </p>\';
$output .= \' <p>\';
$output .= \' \' . $this->display_textarea( \'comments\', \'comments\', $comments );
$output .= \' </p>\';
$output .= \' <p>\';
$output .= \' <input type="submit" name="submit" value="Submit" />\';
$output .= \' </p>\';
$output .= \'</form>\';
return $output;
}
/**
* Display text field
*/
private function display_text( $name, $label, $value = \'\' ) {
$output = \'\';
$output .= \'<label>\' . esc_html__( $label, \'wpse_299521\' ) . \'</label>\';
$output .= \'<input type="text" name="\' . esc_attr( $name ) . \'" value="\' . esc_attr( $value ) . \'">\';
return $output;
}
/**
* Display textarea field
*/
private function display_textarea( $name, $label, $value = \'\' ) {
$output = \'\';
$output .= \'<label> \' . esc_html__( $label, \'wpse_299521\' ) . \'</label>\';
$output .= \'<textarea name="\' . esc_attr( $name ) . \'" >\' . esc_html( $value ) . \'</textarea>\';
return $output;
}
/**
* Display radios field
*/
private function display_radios( $name, $label, $options, $value = null ) {
$output = \'\';
$output .= \'<label>\' . esc_html__( $label, \'wpse_299521\' ) . \'</label>\';
foreach ( $options as $option_value => $option_label ):
$output .= $this->display_radio( $name, $option_label, $option_value, $value );
endforeach;
return $output;
}
/**
* Display single checkbox field
*/
private function display_radio( $name, $label, $option_value, $value = null ) {
$output = \'\';
$checked = ( $option_value === $value ) ? \' checked\' : \'\';
$output .= \'<label>\';
$output .= \' <input type="radio" name="\' . esc_attr( $name ) . \'" value="\' . esc_attr( $option_value ) . \'"\' . esc_attr( $checked ) . \'>\';
$output .= \' \' . esc_html__( $label, \'wpse_299521\' );
$output .= \'</label>\';
return $output;
}
/**
* Display checkboxes field
*/
private function display_checkboxes( $name, $label, $options, $values = array() ) {
$output = \'\';
$name .= \'[]\';
$output .= \'<label>\' . esc_html__( $label, \'wpse_299521\' ) . \'</label>\';
foreach ( $options as $option_value => $option_label ):
$output .= $this->display_checkbox( $name, $option_label, $option_value, $values );
endforeach;
return $output;
}
/**
* Display single checkbox field
*/
private function display_checkbox( $name, $label, $available_value, $values = array() ) {
$output = \'\';
$checked = ( in_array($available_value, $values) ) ? \' checked\' : \'\';
$output .= \'<label>\';
$output .= \' <input type="checkbox" name="\' . esc_attr( $name ) . \'" value="\' . esc_attr( $available_value ) . \'"\' . esc_attr( $checked ) . \'>\';
$output .= \' \' . esc_html__( $label, \'wpse_299521\' );
$output .= \'</label>\';
return $output;
}
/**
* Get available colors
*/
private function get_available_colors() {
return array(
\'red\' => \'Red\',
\'blue\' => \'Blue\',
\'green\' => \'Green\',
);
}
/**
* Get available accessories
*/
private function get_available_accessories() {
return array(
\'case\' => \'Case\',
\'tempered_glass\' => \'Tempered glass\',
\'headphones\' => \'Headphones\',
);
}
/**
* Define hooks related to plugin
*/
private function define_hooks() {
/**
* Add action to send email
*/
add_action( \'wp\', array( $this, \'controller\' ) );
/**
* Add shortcode to display form
*/
add_shortcode( \'contact\', array( $this, \'display_form\' ) );
}
}
new WPSE_299521_Form();
粘贴代码后，可以使用快捷码
[contact] 以显示它。
