WP_Filesystem_Direct::put_contents( string $file, string $contents, int|false $mode = false )

Source

File: wp-admin/includes/class-wp-filesystem-direct.php

public function put_contents( $file, $contents, $mode = false ) {
		$fp = @fopen( $file, 'wb' );

		if ( ! $fp ) {
			return false;
		}

		mbstring_binary_safe_encoding();

		$data_length = strlen( $contents );

		$bytes_written = fwrite( $fp, $contents );

		reset_mbstring_encoding();

		fclose( $fp );

		if ( $data_length !== $bytes_written ) {
			return false;
		}

		$this->chmod( $file, $mode );

		return true;
	}