wp-includes/functions.php:4656Reads and decodes a JSON file.
$filenamestring$optionsarrayoptionalarray()$associativebooldefault: false
mixedfunction wp_json_file_decode( $filename, $options = array() ) { $result = null; $filename = wp_normalize_path( realpath( $filename ) ); if ( ! $filename ) { wp_trigger_error( __FUNCTION__, sprintf( /* translators: %s: Path to the JSON file. */ __( "File %s doesn't exist!" ), $filename ) ); return $result; } $options = wp_parse_args( $options, array( 'associative' => false ) ); $decoded_file = json_decode( file_get_contents( $filename ), $options['associative'] ); if ( JSON_ERROR_NONE !== json_last_error() ) { wp_trigger_error( __FUNCTION__, sprintf( /* translators: 1: Path to the JSON file, 2: Error message. */ __( 'Error when decoding a JSON file at path %1$s: %2$s' ), $filename, json_last_error_msg() ) ); return $result; } return $decoded_file;}Introduced in 5.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.