File "acf-helper-functions.php"
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<?php
/**
* Returns true if the value provided is considered "empty". Allows numbers such as 0.
*
* @date 6/7/16
* @since 5.4.0
*
* @param mixed $var The value to check.
* @return boolean
*/
function acf_is_empty( $var ) {
return ( ! $var && ! is_numeric( $var ) );
}
/**
* Returns true if the value provided is considered "not empty". Allows numbers such as 0.
*
* @date 15/7/19
* @since 5.8.1
*
* @param mixed $var The value to check.
* @return boolean
*/
function acf_not_empty( $var ) {
return ( $var || is_numeric( $var ) );
}
/**
* Returns a unique numeric based id.
*
* @date 9/1/19
* @since 5.7.10
*
* @param string $prefix The id prefix. Defaults to 'acf'.
* @return string
*/
function acf_uniqid( $prefix = 'acf' ) {
// Instantiate global counter.
global $acf_uniqid;
if ( ! isset( $acf_uniqid ) ) {
$acf_uniqid = 1;
}
// Return id.
return $prefix . '-' . $acf_uniqid++;
}
/**
* Merges together two arrays but with extra functionality to append class names.
*
* @date 22/1/19
* @since 5.7.10
*
* @param array $array1 An array of attributes.
* @param array $array2 An array of attributes.
* @return array
*/
function acf_merge_attributes( $array1, $array2 ) {
// Merge together attributes.
$array3 = array_merge( $array1, $array2 );
// Append together special attributes.
foreach ( array( 'class', 'style' ) as $key ) {
if ( isset( $array1[ $key ] ) && isset( $array2[ $key ] ) ) {
$array3[ $key ] = trim( $array1[ $key ] ) . ' ' . trim( $array2[ $key ] );
}
}
// Return.
return $array3;
}
/**
* acf_cache_key
*
* Returns a filtered cache key.
*
* @date 25/1/19
* @since 5.7.11
*
* @param string $key The cache key.
* @return string
*/
function acf_cache_key( $key = '' ) {
/**
* Filters the cache key.
*
* @date 25/1/19
* @since 5.7.11
*
* @param string $key The cache key.
* @param string $original_key The original cache key.
*/
return apply_filters( 'acf/get_cache_key', $key, $key );
}
/**
* acf_request_args
*
* Returns an array of $_REQUEST values using the provided defaults.
*
* @date 28/2/19
* @since 5.7.13
*
* @param array $args An array of args.
* @return array
*/
function acf_request_args( $args = array() ) {
foreach ( $args as $k => $v ) {
$args[ $k ] = isset( $_REQUEST[ $k ] ) ? acf_sanitize_request_args( $_REQUEST[ $k ] ) : $args[ $k ]; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Verified elsewhere.
}
return $args;
}
/**
* Returns a single $_REQUEST arg with fallback.
*
* @date 23/10/20
* @since 5.9.2
*
* @param string $key The property name.
* @param mixed $default The default value to fallback to.
* @return mixed
*/
function acf_request_arg( $name = '', $default = null ) {
return isset( $_REQUEST[ $name ] ) ? acf_sanitize_request_args( $_REQUEST[ $name ] ) : $default; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
// Register store.
acf_register_store( 'filters' );
/**
* acf_enable_filter
*
* Enables a filter with the given name.
*
* @date 14/7/16
* @since 5.4.0
*
* @param string name The modifer name.
* @return void
*/
function acf_enable_filter( $name = '' ) {
acf_get_store( 'filters' )->set( $name, true );
}
/**
* acf_disable_filter
*
* Disables a filter with the given name.
*
* @date 14/7/16
* @since 5.4.0
*
* @param string name The modifer name.
* @return void
*/
function acf_disable_filter( $name = '' ) {
acf_get_store( 'filters' )->set( $name, false );
}
/**
* acf_is_filter_enabled
*
* Returns the state of a filter for the given name.
*
* @date 14/7/16
* @since 5.4.0
*
* @param string name The modifer name.
* @return array
*/
function acf_is_filter_enabled( $name = '' ) {
return acf_get_store( 'filters' )->get( $name );
}
/**
* acf_get_filters
*
* Returns an array of filters in their current state.
*
* @date 14/7/16
* @since 5.4.0
*
* @param void
* @return array
*/
function acf_get_filters() {
return acf_get_store( 'filters' )->get();
}
/**
* acf_set_filters
*
* Sets an array of filter states.
*
* @date 14/7/16
* @since 5.4.0
*
* @param array $filters An Array of modifers
* @return array
*/
function acf_set_filters( $filters = array() ) {
acf_get_store( 'filters' )->set( $filters );
}
/**
* acf_disable_filters
*
* Disables all filters and returns the previous state.
*
* @date 14/7/16
* @since 5.4.0
*
* @param void
* @return array
*/
function acf_disable_filters() {
// Get state.
$prev_state = acf_get_filters();
// Set all modifers as false.
acf_set_filters( array_map( '__return_false', $prev_state ) );
// Return prev state.
return $prev_state;
}
/**
* acf_enable_filters
*
* Enables all or an array of specific filters and returns the previous state.
*
* @date 14/7/16
* @since 5.4.0
*
* @param array $filters An Array of modifers
* @return array
*/
function acf_enable_filters( $filters = array() ) {
// Get state.
$prev_state = acf_get_filters();
// Allow specific filters to be enabled.
if ( $filters ) {
acf_set_filters( $filters );
// Set all modifers as true.
} else {
acf_set_filters( array_map( '__return_true', $prev_state ) );
}
// Return prev state.
return $prev_state;
}
/**
* acf_idval
*
* Parses the provided value for an ID.
*
* @date 29/3/19
* @since 5.7.14
*
* @param mixed $value A value to parse.
* @return integer
*/
function acf_idval( $value ) {
// Check if value is numeric.
if ( is_numeric( $value ) ) {
return (int) $value;
// Check if value is array.
} elseif ( is_array( $value ) ) {
return (int) isset( $value['ID'] ) ? $value['ID'] : 0;
// Check if value is object.
} elseif ( is_object( $value ) ) {
return (int) isset( $value->ID ) ? $value->ID : 0;
}
// Return default.
return 0;
}
/**
* acf_maybe_idval
*
* Checks value for potential id value.
*
* @date 6/4/19
* @since 5.7.14
*
* @param mixed $value A value to parse.
* @return mixed
*/
function acf_maybe_idval( $value ) {
if ( $id = acf_idval( $value ) ) {
return $id;
}
return $value;
}
/**
* Convert any numeric strings into their equivalent numeric type. This function will
* work with both single values and arrays.
*
* @param mixed $value Either a single value or an array of values.
* @return mixed
*/
function acf_format_numerics( $value ) {
if ( is_array( $value ) ) {
return array_map(
function ( $v ) {
return is_numeric( $v ) ? $v + 0 : $v;
},
$value
);
}
return is_numeric( $value ) ? $value + 0 : $value;
}
/**
* acf_numval
*
* Casts the provided value as eiter an int or float using a simple hack.
*
* @date 11/4/19
* @since 5.7.14
*
* @param mixed $value A value to parse.
* @return (int|float)
*/
function acf_numval( $value ) {
return ( intval( $value ) == floatval( $value ) ) ? intval( $value ) : floatval( $value );
}
/**
* acf_idify
*
* Returns an id attribute friendly string.
*
* @date 24/12/17
* @since 5.6.5
*
* @param string $str The string to convert.
* @return string
*/
function acf_idify( $str = '' ) {
return str_replace( array( '][', '[', ']' ), array( '-', '-', '' ), strtolower( $str ) );
}
/**
* Returns a slug friendly string.
*
* @date 24/12/17
* @since 5.6.5
*
* @param string $str The string to convert.
* @param string $glue The glue between each slug piece.
* @return string
*/
function acf_slugify( $str = '', $glue = '-' ) {
$raw = $str;
$slug = str_replace( array( '_', '-', '/', ' ' ), $glue, strtolower( remove_accents( $raw ) ) );
$slug = preg_replace( '/[^A-Za-z0-9' . preg_quote( $glue ) . ']/', '', $slug );
/**
* Filters the slug created by acf_slugify().
*
* @since 5.11.4
*
* @param string $slug The newly created slug.
* @param string $raw The original string.
* @param string $glue The separator used to join the string into a slug.
*/
return apply_filters( 'acf/slugify', $slug, $raw, $glue );
}
/**
* Returns a string with correct full stop punctuation.
*
* @date 12/7/19
* @since 5.8.2
*
* @param string $str The string to format.
* @return string
*/
function acf_punctify( $str = '' ) {
if ( substr( trim( strip_tags( $str ) ), -1 ) !== '.' ) {
return trim( $str ) . '.';
}
return trim( $str );
}
/**
* acf_did
*
* Returns true if ACF already did an event.
*
* @date 30/8/19
* @since 5.8.1
*
* @param string $name The name of the event.
* @return boolean
*/
function acf_did( $name ) {
// Return true if already did the event (preventing event).
if ( acf_get_data( "acf_did_$name" ) ) {
return true;
// Otherwise, update store and return false (alowing event).
} else {
acf_set_data( "acf_did_$name", true );
return false;
}
}
/**
* Returns the length of a string that has been submitted via $_POST.
*
* Uses the following process:
* 1. Unslash the string because posted values will be slashed.
* 2. Decode special characters because wp_kses() will normalize entities.
* 3. Treat line-breaks as a single character instead of two.
* 4. Use mb_strlen() to accomodate special characters.
*
* @date 04/06/2020
* @since 5.9.0
*
* @param string $str The string to review.
* @return integer
*/
function acf_strlen( $str ) {
return mb_strlen( str_replace( "\r\n", "\n", wp_specialchars_decode( wp_unslash( $str ) ) ) );
}
/**
* Returns a value with default fallback.
*
* @date 6/4/20
* @since 5.9.0
*
* @param mixed $value The value.
* @param mixed $default_value The default value.
* @return mixed
*/
function acf_with_default( $value, $default_value ) {
return $value ? $value : $default_value;
}
/**
* Returns the current priority of a running action.
*
* @date 14/07/2020
* @since 5.9.0
*
* @param string $action The action name.
* @return integer|boolean
*/
function acf_doing_action( $action ) {
global $wp_filter;
if ( isset( $wp_filter[ $action ] ) ) {
return $wp_filter[ $action ]->current_priority();
}
return false;
}
/**
* Returns the current URL.
*
* @date 23/01/2015
* @since 5.1.5
*
* @param void
* @return string
*/
function acf_get_current_url() {
// Ensure props exist to avoid PHP Notice during CLI commands.
if ( isset( $_SERVER['HTTP_HOST'], $_SERVER['REQUEST_URI'] ) ) {
return ( is_ssl() ? 'https' : 'http' ) . '://' . filter_var( $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], FILTER_SANITIZE_URL );
}
return '';
}
/**
* Add UTM tracking tags to internal ACF URLs
*
* @since 6.0.0
*
* @param string $url The URL to be tagged.
* @param string $campaign The campaign tag.
* @param string $content The UTM content tag.
* @param boolean $anchor An optional anchor ID.
* @param string $source An optional UTM source tag.
* @param string $medium An optional UTM medium tag.
* @return string
*/
function acf_add_url_utm_tags( $url, $campaign, $content, $anchor = false, $source = '', $medium = '' ) {
$anchor_url = $anchor ? '#' . $anchor : '';
$medium = ! empty( $medium ) ? $medium : 'insideplugin';
if ( empty( $source ) ) {
$source = acf_is_pro() ? 'ACF PRO' : 'ACF Free';
}
$query = http_build_query(
apply_filters(
'acf/admin/acf_url_utm_parameters',
array(
'utm_source' => $source,
'utm_medium' => $medium,
'utm_campaign' => $campaign,
'utm_content' => $content,
)
)
);
if ( $query ) {
if ( strpos( $url, '?' ) !== false ) {
$query = '&' . $query;
} else {
$query = '?' . $query;
}
}
return esc_url( $url . $query . $anchor_url );
}
/**
* Sanitizes request arguments.
*
* @param mixed $args The data to sanitize.
*
* @return array|boolean|float|integer|mixed|string
*/
function acf_sanitize_request_args( $args = array() ) {
switch ( gettype( $args ) ) {
case 'boolean':
return (bool) $args;
case 'integer':
return (int) $args;
case 'double':
return (float) $args;
case 'array':
$sanitized = array();
foreach ( $args as $key => $value ) {
$key = sanitize_text_field( $key );
$sanitized[ $key ] = acf_sanitize_request_args( $value );
}
return $sanitized;
case 'object':
return wp_kses_post_deep( $args );
case 'string':
default:
return wp_kses( $args, 'acf' );
}
}
/**
* Sanitizes file upload arrays.
*
* @since 6.0.4
*
* @param array $args The file array.
*
* @return array
*/
function acf_sanitize_files_array( array $args = array() ) {
$defaults = array(
'name' => '',
'tmp_name' => '',
'type' => '',
'size' => 0,
'error' => '',
);
$args = wp_parse_args( $args, $defaults );
if ( empty( $args['name'] ) ) {
return $defaults;
}
if ( is_array( $args['name'] ) ) {
$files = array();
$files['name'] = acf_sanitize_files_value_array( $args['name'], 'sanitize_file_name' );
$files['tmp_name'] = acf_sanitize_files_value_array( $args['tmp_name'], 'sanitize_text_field' );
$files['type'] = acf_sanitize_files_value_array( $args['type'], 'sanitize_text_field' );
$files['size'] = acf_sanitize_files_value_array( $args['size'], 'absint' );
$files['error'] = acf_sanitize_files_value_array( $args['error'], 'absint' );
return $files;
}
$file = array();
$file['name'] = sanitize_file_name( $args['name'] );
$file['tmp_name'] = sanitize_text_field( $args['tmp_name'] );
$file['type'] = sanitize_text_field( $args['type'] );
$file['size'] = absint( $args['size'] );
$file['error'] = absint( $args['error'] );
return $file;
}
/**
* Sanitizes file upload values within the array.
*
* This addresses nested file fields within repeaters and groups.
*
* @since 6.0.5
*
* @param array $array The file upload array.
* @param string $sanitize_function Callback used to sanitize array value.
* @return array
*/
function acf_sanitize_files_value_array( $array, $sanitize_function ) {
if ( ! function_exists( $sanitize_function ) ) {
return $array;
}
if ( ! is_array( $array ) ) {
return $sanitize_function( $array );
}
foreach ( $array as $key => $value ) {
if ( is_array( $value ) ) {
$array[ $key ] = acf_sanitize_files_value_array( $value, $sanitize_function );
} else {
$array[ $key ] = $sanitize_function( $value );
}
}
return $array;
}
/**
* Maybe unserialize, but don't allow any classes.
*
* @since 6.1
*
* @param string $data String to be unserialized, if serialized.
* @return mixed The unserialized, or original data.
*/
function acf_maybe_unserialize( $data ) {
if ( is_serialized( $data ) ) { // Don't attempt to unserialize data that wasn't serialized going in.
return @unserialize( trim( $data ), array( 'allowed_classes' => false ) ); //phpcs:ignore -- allowed classes is false.
}
return $data;
}
/**
* Check if current install is ACF PRO
*
* @since 6.2
*
* @return boolean True if the current install is ACF PRO
*/
function acf_is_pro() {
return defined( 'ACF_PRO' ) && ACF_PRO;
}
/**
* Check if ACF is a beta-like release.
*
* @since 6.3
*
* @return boolean True if the current install version contains a dash, indicating a alpha, beta or RC release.
*/
function acf_is_beta() {
return defined( 'ACF_VERSION' ) && strpos( ACF_VERSION, '-' ) !== false;
}
/**
* Returns the version of ACF when it was first activated.
* However, if ACF was first activated prior to the introduction of the acf_first_activated_version option,
* this function returns false (boolean) to indicate that the version could not be determined.
*
* @since 6.3
*
* @return string|boolean The (string) version of ACF when it was first activated, or false (boolean) if the version could not be determined.
*/
function acf_get_version_when_first_activated() {
// Check if ACF is network-activated on a multisite.
if ( is_multisite() ) {
$acf_dir_and_filename = basename( ACF_PATH ) . '/acf.php';
$plugins = get_site_option( 'active_sitewide_plugins' );
if ( isset( $plugins[ $acf_dir_and_filename ] ) ) {
$main_site_id = get_main_site_id();
if ( empty( $main_site_id ) ) {
return false;
}
// ACF is network activated, so get the version from main site's options.
return get_blog_option( $main_site_id, 'acf_first_activated_version', false );
}
}
// Check if ACF is activated on this single site.
return get_option( 'acf_first_activated_version', false );
}